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BEGIN:VEVENT
SUMMARY:What does Inflation say about Dark Energy given the Swampland Conj
ectures?
DTSTART;VALUE=DATE-TIME:20190627T134500Z
DTEND;VALUE=DATE-TIME:20190627T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3481096@indico.cern.ch
DESCRIPTION:Speakers: Jacob Leedom (University of California\, Berkeley)\n
I will discuss the relations between swampland conjectures and observation
al constraints on both inflation and dark energy. Using the fact that the
constant c appearing in the de Sitter conjecture is a universal constant w
hose value can be determined from inflation\, there may be no observable d
istinction between constant and non-constant models of dark energy. Howeve
r\, the latest modification of the above conjecture\, which utilizes the s
econd derivative of the potential\, opens up the opportunity for observati
ons to determine if the dark energy equation of state deviates from that o
f a cosmological constant.\n\nhttps://indico.cern.ch/event/782251/contribu
tions/3481096/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3481096/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The dS Swampland Conjecture\, Non-BPS branes and K-theory
DTSTART;VALUE=DATE-TIME:20190627T143000Z
DTEND;VALUE=DATE-TIME:20190627T144500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3472868@indico.cern.ch
DESCRIPTION:Speakers: Max Brinkmann (MPI Munich)\nThe de Sitter swampland
conjecture would be falsified if classical fluxed Type IIA orientifold vac
ua with a single non-BPS D7-brane were indeed part of the string theory la
ndscape. In other words\, the dS swampland conjecture implies the cancella
tion of K-theory charges on a compact space.\n\nhttps://indico.cern.ch/eve
nt/782251/contributions/3472868/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3472868/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Inflation as an Information Bottleneck
DTSTART;VALUE=DATE-TIME:20190626T090000Z
DTEND;VALUE=DATE-TIME:20190626T093000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441872@indico.cern.ch
DESCRIPTION:Speakers: Alexander Westphal (DESY Hamburg)\nWe discuss how to
ols from information theory combined with machine learning a direct map fr
om the microscopic parameters of a string inflation mechanism to the CMB o
bservables allows us to systematically estimate the observable footprint o
f the theory uncertainty. We demonstrate this using the example mechanism
of single-field axion monodromy inflation. We find that inflation acts as
an information bottleneck\, with a surprising number of microscopic parame
ters decoupling from the CMB observables.\n\nhttps://indico.cern.ch/event/
782251/contributions/3441872/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441872/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Constraining the early universe with gravitational waves
DTSTART;VALUE=DATE-TIME:20190624T123000Z
DTEND;VALUE=DATE-TIME:20190624T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441842@indico.cern.ch
DESCRIPTION:Speakers: Chiara Caprini (APC Paris)\nGravitational waves can
be a powerful probe of cosmology\, both for what concerns the late-time an
d the very early universe. I will present the main reasons why and provide
some examples\, in particular in the context of the space-based interfero
meter LISA.\n\nhttps://indico.cern.ch/event/782251/contributions/3441842/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441842/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Weak Gravity Conjecture and Repulsive Forces
DTSTART;VALUE=DATE-TIME:20190625T080000Z
DTEND;VALUE=DATE-TIME:20190625T083000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441855@indico.cern.ch
DESCRIPTION:Speakers: Ben Heidenreich ()\nThe Weak Gravity Conjecture (WGC
) has a variant based on repulsive long-range forces. I discuss this "Repu
lsive Force Conjecture" (RFC) in detail\, describing its relation to the W
GC and to black holes\, and what evidence supports the conjecture. I also
discuss strong forms of the conjecture\, such as the "sublattice RFC"\, ho
w these are realized in perturbative string theory\, and how all of these
conjectures relate to BPS states.\n\nhttps://indico.cern.ch/event/782251/c
ontributions/3441855/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441855/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dualities in and from Machine Learning
DTSTART;VALUE=DATE-TIME:20190627T100000Z
DTEND;VALUE=DATE-TIME:20190627T103000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441860@indico.cern.ch
DESCRIPTION:Speakers: Sven Krippendorf (University of Oxford)\nDualities p
lay a key role in our understanding of dynamical systems appearing in effe
ctive field theories from string theory and in general in fundamental phys
ics. Dualities in field theory and string theory are a tool to obtain mode
ls describing data at a precision beyond a level standard effective field
theory techniques allow. At this stage these techniques are not used expli
citly in machine learning.\n\nBased on examples\, we identify data questio
ns which are easily answerable in one duality frame but not in the other.
Simple neural networks confronted with data in this favoured duality frame
can answer data questions\, in the other frame they cannot identify the c
orrect answer.\n\nWe then discuss the question whether a deeper neural net
work can learn this favourable dual data representation? We present how\,
based on feature separation\, a dual representation\, in this example a Fo
urier-like transformation\, can be learned without knowing about its exist
ence. We then discuss how this framework can be extended to apply to physi
cal systems\, in particular the 2D Ising model. We comment on potential us
es for effective field theories from string theory.\n\nhttps://indico.cern
.ch/event/782251/contributions/3441860/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441860/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On Towers and Scalars
DTSTART;VALUE=DATE-TIME:20190627T070000Z
DTEND;VALUE=DATE-TIME:20190627T073000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441881@indico.cern.ch
DESCRIPTION:Speakers: Luis Ibanez (Universidad Autonoma de Madrid (ES))\n
We study three topics concerning the role of scalars and the distance con
jecture in the Swampland program. First we discuss a Scalar Weak Gravity C
onjecture (SSWGC). Solutions for the corresponding extremal equation are c
ompatible with towers of winding and momenta states becoming massless for
large fields. We show that this SSWGC implies the refined dS conjecture un
der certain particular conditions. Second\, we show how in CY compactifica
tions in Type II string theory towers of particles\, strings and domain wa
lls become massless(tensionlesss) for large values of the Kahler and compl
ex structure moduli. Third\, we propose to use modular symmetries in the s
calar moduli space of string compactifications in trying to test the valid
ity of swampland ideas in theories with N=0\,1 SUSY. Modular invariance re
quires potentials to be divergent for large values of the moduli\, forbidd
ing global symmetries to arise.\n\nhttps://indico.cern.ch/event/782251/con
tributions/3441881/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441881/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Deep Reinforcement Learning and the Type IIA Landscape
DTSTART;VALUE=DATE-TIME:20190627T093000Z
DTEND;VALUE=DATE-TIME:20190627T100000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441884@indico.cern.ch
DESCRIPTION:Speakers: Brent Nelson (Northeastern University)\nAn artificia
l intelligence agent known as an asynchronous advantage actor-critic is ut
ilized to explore type IIA compactifications with intersecting D6-branes.
By reinforcement learning\, the agent's performance in satisfying string c
onsistency conditions\, and finding Standard Model like configurations\, i
s significantly improved. In one case\, we demonstrate that the agent lear
ns a human-derived strategy for finding consistent string models. In anoth
er case\, where no human-derived strategy exists\, the agent learns a genu
inely new strategy that achieves the same goal twice as efficiently per un
it time.\n\nhttps://indico.cern.ch/event/782251/contributions/3441884/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441884/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Line Bundles in String Model Building
DTSTART;VALUE=DATE-TIME:20190624T150000Z
DTEND;VALUE=DATE-TIME:20190624T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441850@indico.cern.ch
DESCRIPTION:Speakers: Andre Lukas (U)\nI discuss a recent count of heterot
ic line bundle models which suggests that the number of string standard mo
dels is exponentially large. In the second half of the talk\, I focus on t
he underlying methods to compute line bundle cohomology. New analytic resu
lts for line bundle cohomology on complex manifolds point to an underlying
mathematical structure which I discuss. Machine learning techniques may b
e helpful to uncover this structure.\n\nhttps://indico.cern.ch/event/78225
1/contributions/3441850/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441850/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Landscape of AdS Flux Vacua
DTSTART;VALUE=DATE-TIME:20190625T154500Z
DTEND;VALUE=DATE-TIME:20190625T160000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442308@indico.cern.ch
DESCRIPTION:Speakers: Joan Quirant (IFT (UAM/CSIC))\nWe analyse type IIA C
alabi-Yau orientifolds with background fluxes and D6-branes. Rewriting the
F-term scalar potential as a bilinear in flux-axion polynomials yields a
more efficient description of the Landscape of flux vacua\, allowing for a
systematic search of vacua. We classify families of N= 0 Minkowski\, N =
1 AdS and N = 0 AdS flux vacua\, extending previous findings in the liter
ature to the Calabi-Yau context. We compute the spectrum of flux-induced m
asses and show that all these vacua are perturbatively stable. Finally\, w
e extend this Landscape to the open string sector by including D6-branes.\
n\nhttps://indico.cern.ch/event/782251/contributions/3442308/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442308/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Walls of Marginal Stability and the Swampland Distance Conjecture
DTSTART;VALUE=DATE-TIME:20190625T123000Z
DTEND;VALUE=DATE-TIME:20190625T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442290@indico.cern.ch
DESCRIPTION:Speakers: Markus Dierigl (Utrecht University)\nIn this talk we
will investigate the Swampland Distance Conjecture in type IIB string the
ory compactified on K3 x T2. As conjectured one indeed finds a tower of ex
ponentially light states using the Hodge-Deligne splitting of the middle h
omology in the degeneration limit. This tower\, however\, consists of quar
ter-BPS states\, which can potentially decay into a pair of half-BPS state
s at walls of marginal stability. We investigate the presence of these wal
ls in the context of the degenerations.\n\nhttps://indico.cern.ch/event/78
2251/contributions/3442290/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442290/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Tower Weak Gravity Conjecture from Infrared Consistency
DTSTART;VALUE=DATE-TIME:20190627T123000Z
DTEND;VALUE=DATE-TIME:20190627T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442260@indico.cern.ch
DESCRIPTION:Speakers: Stefano Andriolo (Hong Kong university of science an
d technology)\nWe analyze infrared consistency conditions of 3D and 4D eff
ective field theories with massive scalars or fermions charged under multi
ple U(1) gauge fields. At low energies\, one can integrate out the massive
particles and thus obtain a one-loop effective action for the gauge field
s. In the regime where charge-independent contributions to higher-derivati
ve terms in the action are sufficiently small\, it is then possible to der
ive constraints on the charge-to-mass ratios of the massive particles from
requiring that photons propagate causally and have an analytic S-matrix.
We thus find that the theories need to contain bifundamentals other than s
atisfying the convex-hull condition. Demanding self-consistency of the con
straints under Kaluza-Klein compactification\, we show that\, for scalars\
, they imply a stronger version of the weak gravity conjecture in which th
e charge-to-mass ratios of an infinite tower of particles are bounded from
below. We find that the tower must again include bifundamentals but does
not necessarily have to occupy a charge (sub-)lattice.\n\nhttps://indico.c
ern.ch/event/782251/contributions/3442260/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442260/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hope or No Hope for a String Landscape?
DTSTART;VALUE=DATE-TIME:20190627T080000Z
DTEND;VALUE=DATE-TIME:20190627T083000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441886@indico.cern.ch
DESCRIPTION:Speakers: Savdeep Sethi (University of Chicago)\nWhether strin
g theory admits a multiverse of de Sitter solutions that look approximatel
y like our universe is a hotly debated current topic. I will overview the
basics of landscape constructions and explain my view on this question. I
will also outline a possible construction of de Sitter solutions.\n\nhttps
://indico.cern.ch/event/782251/contributions/3441886/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441886/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On gaugino condensation in ten dimensions
DTSTART;VALUE=DATE-TIME:20190627T130000Z
DTEND;VALUE=DATE-TIME:20190627T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442305@indico.cern.ch
DESCRIPTION:Speakers: Pablo Soler (ITP Heidelberg)\nGaugino condensation p
lays a prominent role in many approaches to constructing dS vacua in strin
g theory. While its analysis is generally performed in the low energy 4d E
FT\, a 10d perspective can be useful to understand possible constraints on
dS uplifts. I will discuss aspects of gaugino interactions localized to D
7 branes in type IIB theories\, and some insights these provide for KKLT c
onstructions.\n\nhttps://indico.cern.ch/event/782251/contributions/3442305
/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442305/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thraxions: Ultralight Throat Axions
DTSTART;VALUE=DATE-TIME:20190627T150000Z
DTEND;VALUE=DATE-TIME:20190627T151500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442286@indico.cern.ch
DESCRIPTION:Speakers: Sasha Leonhardt (Heidelberg University)\nWe argue th
at a new type of extremely light axion is generically present in the type
IIB part of the string theory landscape. Its mass is suppressed by the thi
rd power of the warp factor of a strongly warped region (Klebanov-Strassle
r throat)\, suggesting the name thraxion. Our observation is based on the
generic presence of several throats sharing the same 2-cycle. This cycle s
hrinks to zero volume at the end of each throat. It is hence trivial in ho
mology and the corresponding C2 axion is massive. However\, the mass is wa
rping-suppressed since\, if one were to cut off the strongly warped region
s\, a proper 2-cycle would re-emerge. Since the kinetic term of the axion
is dominated in the UV\, an even stronger\, quadratic mass suppression res
ults. Moreover\, if the axion is excited\, the angular modes of the throat
s backreact. This gives our effective C2 axion a finite monodromy and flat
tens its potential even further. Eventually\, the mass turns out to scale
as the third power of the warp factor.\n\nhttps://indico.cern.ch/event/782
251/contributions/3442286/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442286/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-Minimal M-flation
DTSTART;VALUE=DATE-TIME:20190625T124500Z
DTEND;VALUE=DATE-TIME:20190625T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442249@indico.cern.ch
DESCRIPTION:Speakers: Amjad Ashoorioon (Institute for Research in Fundamen
tal Sciences (IPM))\nWe show how in a matrix inflationary model\, in which
there is a non-minimal coupling between the matrix inflatons and gravity
and we call non-$\\mathbb{M}$-flation for brevity\, some of the disadvanta
ges of the minimal model\, $ \\mathbb{M}$-flation\, can be avoided. In par
ticular\, the number of D3 branes can be reduced to $\\leq \\mathcal{O}(10
^2)$ which can alleviate the ``potential'' backreaction problem of large n
umber of D3 branes on the background geometry in the minimal model. This i
s achieved by values of non-minimal coupling of order few hundred\, which
is much smaller than what is required in Higgs Inflation. The prediction o
f the model in the symmetry breaking part of the potential $\\phi>\\mu$\,
which is a local attractor and can support eternal inflation\, consequentl
y becomes compatible with the latest PLANCK result. Contrary to minimal mo
del\, in which the spectator fields failed to deplete the energy of the in
flation at the end of inflation around the symmetry-breaking vacuum\, in n
on-MM-flation\, they can successfully reheat the universe. We also comment
on how this non-minimal coupling can arise in the string theory setup.\n\
nhttps://indico.cern.ch/event/782251/contributions/3442249/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442249/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swampland conjectures at the limits in field space
DTSTART;VALUE=DATE-TIME:20190624T073000Z
DTEND;VALUE=DATE-TIME:20190624T080000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441798@indico.cern.ch
DESCRIPTION:Speakers: Thomas Grimm ()\nString compactifications are often
performed in some asymptotic regime in field space\, such as at weak strin
g coupling or at large volume. I introduce the theory allowing to systemat
ically analyze all such large field limits in geometric moduli spaces. I a
rgue that along each of such limits a universal structure emerges that can
enlighten and test proposed swampland conjectures. I will exemplify this
by briefly discussing evidence for the distance conjecture\, the axion wea
k gravity conjecture\, and the de Sitter conjecture.\n\nhttps://indico.cer
n.ch/event/782251/contributions/3441798/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441798/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Moduli Stars
DTSTART;VALUE=DATE-TIME:20190625T130000Z
DTEND;VALUE=DATE-TIME:20190625T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442274@indico.cern.ch
DESCRIPTION:Speakers: Francesco Muia ()\nThe recent direct detection of gr
avitational waves (GWs) has opened a new window of observation for physica
l phenomena in which gravity is the dominant interaction. Collisions of bl
ack holes and neutron stars have been observed and a plethora of new event
s\, even involving new physics\, are expected to be detected in the next f
ew years. It is natural to explore alternative physical objects that may e
xist which are different from the standard stars and black holes and that
could lead to particular imprints on the GW spectrum. In this talk I will
explore the possibility that moduli (gravitationally coupled scalar fields
arising in all string compactifications) can compose compact objects (mod
uli stars) whose dynamics gives rise to GW production. I will illustrate t
heir formation in the early universe\, that was studied through lattice te
chniques. After their formation moduli stars can have very different behav
iours\, e.g. they could rapidly collapse to black holes or disperse into s
calar radiation. I will describe the fate of moduli stars\, that was inves
tigated through numerical relativity techniques.\n\nhttps://indico.cern.ch
/event/782251/contributions/3442274/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442274/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Calabi-Yau Hypersurface Landscape
DTSTART;VALUE=DATE-TIME:20190627T153000Z
DTEND;VALUE=DATE-TIME:20190627T154500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442313@indico.cern.ch
DESCRIPTION:Speakers: Mehmet Demirtas (Cornell University)\nI will describ
e a large scale study of Calabi-Yau hypersurfaces in toric varieties. We c
onstruct large ensembles of O(10^7) Calabi Yau hypersurfaces and study key
topological properties such as intersection numbers\, cones of effective
curves and divisors\, and fibration structures. I will describe how the pr
operties of a generic hypersurface scale with the Hodge numbers and discus
s some of the phenomenological consequences. Finally\, I will show that ma
chine learning can be used to classify geometries\, predict topological pr
operties given polytope and triangulation data\, and construct geometries
with extraordinary properties.\n\nhttps://indico.cern.ch/event/782251/cont
ributions/3442313/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442313/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Index Formulae for Line Bundle Cohomology on Complex Surfaces
DTSTART;VALUE=DATE-TIME:20190627T151500Z
DTEND;VALUE=DATE-TIME:20190627T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442312@indico.cern.ch
DESCRIPTION:Speakers: Callum Brodie ()\nIn many string theory applications
\, line bundle cohomologies are required input\, for example in model-buil
ding with heterotic string theory\, Type II string theories\, or F-theory.
There exist various case-by-case methods to compute individual cohomologi
es\, but it would be beneficial to have further understanding of and formu
lae for cohomologies. Recently there have been signs that closed-form expr
essions may exist. I will report recent progress on this: we have found ge
neral formulae that describe all line bundle cohomologies on a large class
of surfaces. In particular\, any cohomology on these spaces can be comput
ed as a topological index.\n\nhttps://indico.cern.ch/event/782251/contribu
tions/3442312/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442312/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological formulae for line bundle cohomology
DTSTART;VALUE=DATE-TIME:20190627T150000Z
DTEND;VALUE=DATE-TIME:20190627T151500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442311@indico.cern.ch
DESCRIPTION:Speakers: Andrei Constantin (University of Oxford)\nMy talk is
a brief account of the increasing body of evidence that line bundle cohom
ology can be computed in terms of analytic formulae. Our experimental resu
lts include spaces such as complete intersections in products of projectiv
e spaces (in particular Calabi-Yau threefolds)\, toric varieties\, hypersu
rfaces in toric varieties and del Pezzo surfaces. Machine learning plays a
n important role in finding and generalising the analytic formulae. For ce
rtain surfaces\, including all toric surfaces\, we have obtained and prove
d the existence of topological formulae for all line bundle cohomologies.
Time allowing\, I will discuss the relevance of these formulae for string
model building and other applications\, such as the quantum Hall effect.\n
\nhttps://indico.cern.ch/event/782251/contributions/3442311/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442311/
END:VEVENT
BEGIN:VEVENT
SUMMARY:SCFT sectors in F-theory landscape
DTSTART;VALUE=DATE-TIME:20190627T144500Z
DTEND;VALUE=DATE-TIME:20190627T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442310@indico.cern.ch
DESCRIPTION:Speakers: Yinan Wang (Mathematics\, University of Oxford)\nIt
was shown that the majority of Weierstrass models in the 6D/4D F-theory la
ndscape are non-minimal. Physically\, these 6D/4D supergravity models are
coupled to strongly coupled matter sectors\, such as 6D (1\,0) SCFTs and t
heir compactifications. In this talk\, I will focus on the particle spectr
um of these sectors and their physical consequence.\n\nhttps://indico.cern
.ch/event/782251/contributions/3442310/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442310/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Local Heterotic Reductions
DTSTART;VALUE=DATE-TIME:20190627T143000Z
DTEND;VALUE=DATE-TIME:20190627T144500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442309@indico.cern.ch
DESCRIPTION:Speakers: Eirik Eik Svanes (University of Oxford)\nHitchin sys
tems and Higgs bundles have recently been used to understand local aspects
of M-theory compactifications on G2 manifolds. I will consider a similar
approach from the heterotic point of view\, using the heterotic/M-theory d
uality. Specifically\, I will study alpha' corrections to the reduced hete
rotic system using the Hull-Strominger system. I will present some explici
t solutions and also make some observations on the reduced moduli problem\
, which couples gauge and gravitational degrees of freedom once alpha'-cor
rections are included.\n\nhttps://indico.cern.ch/event/782251/contribution
s/3442309/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442309/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Multi-field Inflation in High-Slope Potentials
DTSTART;VALUE=DATE-TIME:20190627T131500Z
DTEND;VALUE=DATE-TIME:20190627T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442301@indico.cern.ch
DESCRIPTION:Speakers: Robert Rosati (University of Texas at Austin)\nThe r
ecent swampland conjectures have ruled out some of the simplest models of
single-field inflation. Inspired by the distance conjecture and the high-s
lope conjecture\, I will present two families of multi-field inflationary
potentials compatible with the conjectures along the trajectory. One famil
y is a helix-type potential that satisfies the conjectures only locally. T
his family inflates with ϵV≫ϵH and produces Planck-compatible scalar p
erturbations\, but a too-high tensor power. Our other family of potentials
globally satisfies the swampland conjectures and is in negatively-curved
field space. It balances the potential gradient against the geometry to ge
nerate high turning rates. Due to the form of the potential\, this model h
as exactly massless entropic perturbations and a light adiabatic mode. In
the superhorizon limit\, the entropic mode freezes out\, which sources lin
ear growth of the adiabatic mode. In contrast to hyperinflation\, both fam
ilies remain under perturbative control.\n\nhttps://indico.cern.ch/event/7
82251/contributions/3442301/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442301/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Infinite Distances and the Axion Weak Gravity Conjecture
DTSTART;VALUE=DATE-TIME:20190627T133000Z
DTEND;VALUE=DATE-TIME:20190627T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442295@indico.cern.ch
DESCRIPTION:Speakers: Damian Van de Heisteeg (Utrecht University)\nThe axi
on Weak Gravity Conjecture implies that when parametrically increasing axi
on decay constants\, instantons corrections become increasingly important.
In this talk I will discuss evidence for this statement\, obtained by stu
dying the couplings of axions that arise in Type IIA Calabi-Yau compactifi
cations. To be more precise\, I will discuss the asymptotic behavior of th
ese couplings as one moves towards infinite distance loci in the complex s
tructure moduli space of the Calabi-Yau. Then the growth of the tower of s
tates predicted by the Swampland Distance Conjecture will play a crucial r
ole in satisfying the convex hull condition of the Weak Gravity Conjecture
.\n\nhttps://indico.cern.ch/event/782251/contributions/3442295/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442295/
END:VEVENT
BEGIN:VEVENT
SUMMARY:(Mis-)aligned Winding in and applying Genetic Algorithms to Type I
IB String Theory
DTSTART;VALUE=DATE-TIME:20190627T131500Z
DTEND;VALUE=DATE-TIME:20190627T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442294@indico.cern.ch
DESCRIPTION:Speakers: Andreas Schachner (Heidelberg University)\nThis talk
will be divided into two parts. In the first part\, I focus on the attemp
t to construct effective axions with parametrically large decay constants
in type IIB string models summarising work with A. Hebecker and D. Junghan
s (arXiv: 1812.05626). I argue that such axions can be realised as long wi
nding trajectories in complex-structure moduli space by an appropriate flu
x choice. The simplest models with aligned winding in a 2-axion field spac
e fail due to a general no-go theorem. However\, equally simple models wit
h misaligned winding appear to have large decay constants but no large mon
otonic regions in the potential. I also show that the no-go theorem can be
avoided by aligning three or more axions which in principle allows large
decay constants and large monotonic regions in the potential. These result
s may be used to argue against the refined Swampland Distance Conjecture a
nd strong forms of the axionic Weak Gravity Conjecture. The second part of
this talk concerns the applications of genetic algorithms to the landscap
e of type IIB flux vacua based on work with A. Cole and G. Shiu. I argue t
hat genetic algorithms are an efficient method to scan the landscape for v
iable solutions. More specifically\, I consider a symmetric $T^{6}$ as wel
l as the conifold region of a Calabi-Yau hypersurface to prove that geneti
c algorithms are powerful tools to find flux vacua with interesting phenom
enological properties. I discuss different applications such as the minimi
sation of the cosmological constant or the search for appropriate mass sca
les.\n\nhttps://indico.cern.ch/event/782251/contributions/3442294/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442294/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swampland Variations on a Theme by KKLT
DTSTART;VALUE=DATE-TIME:20190627T130000Z
DTEND;VALUE=DATE-TIME:20190627T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442293@indico.cern.ch
DESCRIPTION:Speakers: Daniel Klaewer (Max-Planck-Institut für Physik)\nTh
e KKLT scenario in a warped throat\, if consistent\, provides a concrete c
ounterexample to both the AdS scale separation and the dS swampland conjec
tures. In this talk I will analyze the relevant effective field theory for
the conifold modulus and the overall Kahler modulus that both have expone
ntially small masses. In particular\, I will focus on KK modes that have m
asses below the mass scale set by the conifold modulus. We find that integ
rating out the KK modes leads to one-loop corrections to the moduli kineti
c terms which are of the same functional form as their tree level values.
Implications for the consistency of the KKLT scenario are discussed. Final
ly I will comment on the role of KK modes for the emergence of kinetic ter
ms in quantum gravity.\n\nhttps://indico.cern.ch/event/782251/contribution
s/3442293/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442293/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetry Breaking Warped Throats and the Weak Gravity Conject
ure
DTSTART;VALUE=DATE-TIME:20190627T124500Z
DTEND;VALUE=DATE-TIME:20190627T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442292@indico.cern.ch
DESCRIPTION:Speakers: Ginevra Buratti (Instituto de Fisica Teorica (IFT) U
AM-CSIC)\nThe proposal for a new Swampland conjecture forbidding stable no
n-supersymmetric "locally AdS" warped throats\, which generalizes the Swam
pland criterion forbidding stable non-supersymmetric AdS vacua\, is discus
sed. The conjecture is motivated by the properties of systems of fractiona
l D3-branes at singularities\, and can be used to rule out large classes o
f warped throats with supersymmetry breaking ingredients\, and their possi
ble application to de Sitter uplift. In particular\, this allows to reinte
rpret the runaway instabilities of the gravity dual of fractional branes i
n the dP1 theory\, and to rule out warped throats with Dynamical Supersymm
etry Breaking D-brane sectors at their bottom. Another example are warped
throats with supersymmetry broken by the introduction of anti-orientifold
planes. These examples lead to novel decay mechanisms in explicit non-supe
rsymmetric examples of locally AdS warped throats\, and also of pure AdS b
ackgrounds. Based on arXiv:1810.07673\n\nhttps://indico.cern.ch/event/7822
51/contributions/3442292/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442292/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gaugino condensation and small uplifts in KKLT
DTSTART;VALUE=DATE-TIME:20190627T131500Z
DTEND;VALUE=DATE-TIME:20190627T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442287@indico.cern.ch
DESCRIPTION:Speakers: Jakob Moritz (Deutsches Elektronen-Synchrotron DESY)
\nWe argue that ten-dimensional consistency requirements in the form of a
certain tadpole cancellation condition can be satisfied by KKLT type vacua
of type IIB string theory. The stress caused by the restoring force that
the stabilization mechanism exerts on the volume modulus once supersymmetr
y gets broken can be seen to ensure this dynamically. However\, we also ex
plain that it is surprisingly difficult to engineer sufficiently long warp
ed throats to prevent decompactification which are also small enough in si
ze to fit into the bulk Calabi-Yau (CY). We give arguments that achieving
this with reasonable amount of control may not be possible in generic CY c
ompactifications while CYs with very non-generic geometrical properties mi
ght evade this conclusion.\n\nhttps://indico.cern.ch/event/782251/contribu
tions/3442287/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442287/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On non-perturbative effects and moduli stabilization from 10D
DTSTART;VALUE=DATE-TIME:20190627T124500Z
DTEND;VALUE=DATE-TIME:20190627T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442285@indico.cern.ch
DESCRIPTION:Speakers: Ander Retolaza (IPhT CEA Saclay)\nNon-perturbative e
ffects were long ago proposed to be useful for supersymmetric moduli stabi
lization in Type II string theory compactifications. Their use has been wi
dely studied from the 4D perspective but from the 10D perspective this mec
hanism is not completely understood. By performing a 10D analysis I will s
how some features of the mechanism\, confirming some old 4D results as wel
l as providing some new properties of the compactification.\n\nhttps://ind
ico.cern.ch/event/782251/contributions/3442285/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442285/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Uplifting Runaways
DTSTART;VALUE=DATE-TIME:20190627T123000Z
DTEND;VALUE=DATE-TIME:20190627T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442284@indico.cern.ch
DESCRIPTION:Speakers: Severin Luest (IPhT\, CEA Saclay)\nI will discuss a
mechanism which can lead to a possible instability of the KKLT constructio
n for de Sitter vacua. The sphere at the tip of a warped deformed conifold
throat can be destabilized by antibranes placed in the throat. Consequent
ly\, the stabilization of moduli should not be treated independently from
the antibrane uplift in KKLT-like scenarios. This conifold destabilization
mechanism can be avoided by turning on a large amount of flux on the sphe
re\, but tadpole cancelation constraints the hierarchy of scales in a type
IIB flux compactification. This indicates that antibrane uplift cannot be
used to construct stable de Sitter vacua with a small cosmological consta
nt in perturbative string theory.\n\nhttps://indico.cern.ch/event/782251/c
ontributions/3442284/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442284/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Classification of Left-Right Symmetric Heterotic String vacua
DTSTART;VALUE=DATE-TIME:20190625T154500Z
DTEND;VALUE=DATE-TIME:20190625T160000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442283@indico.cern.ch
DESCRIPTION:Speakers: Benjamin Percival (liverpool)\nI will briefly descri
be the classification approach within the free fermionic formalism\, then
discuss techniques beyond the random generation classification. In particu
lar\, explorations of 'fertile regions' within left-right symmetric models
that are pre-selected at the SO(10) level for phenomenological favourabil
ity. Finally\, we will discuss the application of machine learning techniq
ues within this space of free fermionic string vacua.\n\nhttps://indico.ce
rn.ch/event/782251/contributions/3442283/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442283/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Matrix model and Yukawa couplings on the magnetized noncommutative
torus
DTSTART;VALUE=DATE-TIME:20190625T151500Z
DTEND;VALUE=DATE-TIME:20190625T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442281@indico.cern.ch
DESCRIPTION:Speakers: Honda Masaki (Waseda University)\nThe IKKT model is
proposed as a non-perturbative formulation of superstring theory. I consid
er the magnetized toroidal compactifications of the IKKT model. I find tha
t the chirality and the generation structure are almost same with the magn
etized toroidal compactifications of the super Yang-Mills theory. In addit
ion\, I compute the Yukawa couplings including a noncommutative parameter.
In comparison with the magnetized toroidal compactifications of the super
Yang-Mills theory\, I find that the effect of the noncommutative paramete
r appears the overall factor of the Yukawa couplings.\n\nhttps://indico.ce
rn.ch/event/782251/contributions/3442281/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442281/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wavefunctions and their implications on S^2 with flux and branes
DTSTART;VALUE=DATE-TIME:20190625T150000Z
DTEND;VALUE=DATE-TIME:20190625T151500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442280@indico.cern.ch
DESCRIPTION:Speakers: Yoshiyuki Tatsuta (Waseda Univ.)\nWe formulate a six
dimensional U(1) gauge theory compactified on a (two dimensional) sphere
S^2 with flux and localized brane sources. Profiles of the lowest Kaluza-K
lein (KK) wavefunctions and their masses are derived analytically. In cont
rast to ordinary sphere compactifications\, the above setup can lead to th
e degeneracy of and the sharp localizations of the linearly independent lo
west KK modes\, depending on the number of branes and their tensions. More
over\, it can naturally accommodate CP violation in Yukawa interactions.\n
\nhttps://indico.cern.ch/event/782251/contributions/3442280/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442280/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Observing axion potentials through gravitational waves
DTSTART;VALUE=DATE-TIME:20190625T144500Z
DTEND;VALUE=DATE-TIME:20190625T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442279@indico.cern.ch
DESCRIPTION:Speakers: Evangelos Sfakianakis (University of Illinois at Urb
ana-Champaign)\nI will discuss the the production of gravitational waves w
hich are sourced by the tensor perturbation of SU(2) gauge fields coupled
to a spectator axion field. Even though string theory constructions provid
e a variety of potentials\, they can be categorized based on the number of
non-stationary inflection points. I will present the resulting GW templat
es arising from each potential type. I will focus on the case of a modulat
ed (axion monodromy) potential and show how future observations of CMB B-m
odes can probe the oscillatory behavior of an axion potential\, thus shedd
ing light into the underlying string theory construction.\n\nhttps://indic
o.cern.ch/event/782251/contributions/3442279/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442279/
END:VEVENT
BEGIN:VEVENT
SUMMARY:T-branes in G2 backgrounds
DTSTART;VALUE=DATE-TIME:20190625T154500Z
DTEND;VALUE=DATE-TIME:20190625T160000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442271@indico.cern.ch
DESCRIPTION:Speakers: Gianluca Zoccarato (University of Pennsylvania)\nWe
consider compactifications of M-theory on 7-dimensional manifolds with G2
holonomy and focus on gauge theory sectors that are built as 3-manifolds o
f ADE singularities. We build novel gauge theory configurations that invol
ve non-commuting normal deformations as well as gauge theory magnetic flux
es and provide methods to detect the presence of localised zero modes that
can descend to chiral multiplets in 4d. Some solutions seem to suggest th
at even co-dimension 6 singularities in a G2 manifold can host chiral matt
er\, an observation that might be fruitful in the construction of particle
physics models from M-theory.\n\nhttps://indico.cern.ch/event/782251/cont
ributions/3442271/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442271/
END:VEVENT
BEGIN:VEVENT
SUMMARY:F-theory on quotient elliptic threefolds
DTSTART;VALUE=DATE-TIME:20190625T153000Z
DTEND;VALUE=DATE-TIME:20190625T154500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442270@indico.cern.ch
DESCRIPTION:Speakers: Paul-Konstantin Oehlmann (Virginia Tech)\nWe present
a systematic study of F-theory on smooth elliptic quotient threefolds. We
show that general anomaly cancellation in the 6d SUGRA theory is satisfie
d upon the addition of additional discrete charged superconformal matter.
The quotient generically also breaks the gauge symmetry to a discrete one.
We use this method to study an order 6 example explicitly constructed via
a quotient of a Schoen manifold.\n\nhttps://indico.cern.ch/event/782251/c
ontributions/3442270/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442270/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yukawa Hierarchies in Global F-theory Models
DTSTART;VALUE=DATE-TIME:20190625T151500Z
DTEND;VALUE=DATE-TIME:20190625T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442269@indico.cern.ch
DESCRIPTION:Speakers: Ling Lin (University of Pennsylvania)\nI will argue
that global 4d F-theory models generically exhibit holomorphic Yukawa matr
ices of higher rank. In a toy model\, where one can explicitly compute all
contributions to one type of couplings\, the eigenvalues are shown to dev
elop large hierarchies for generic complex structure moduli.\n\nhttps://in
dico.cern.ch/event/782251/contributions/3442269/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442269/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A CICY scan for orientifolds
DTSTART;VALUE=DATE-TIME:20190625T144500Z
DTEND;VALUE=DATE-TIME:20190625T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442267@indico.cern.ch
DESCRIPTION:Speakers: Federico Carta (DESY)\nA orientifold involution on a
Calabi-Yau manifold will induce a splitting of the cohomology in even and
odd parts. Furthermore\, in many IIB models it proves useful that the ori
entifold action gives non-vanishing odd h11. Motivated by these facts\, we
report here the result of a scan in the database of complete intersection
Calabi-Yau threefolds. Out of the 7890 CICYs we single out which ones adm
it a Z2 involution swapping same-topology divisors\, therefore allowing fo
r the introduction of an O7- plane. We then compute the values of the odd
part of h11. Our conclusion is that at least in this database the odd h11
will be (almost) always zero or one\, so CICYs are generically not good if
one insists in having models with large odd h11. We compare this result w
ith an analog one in the the Kreuzer-Skarke database.\n\nhttps://indico.ce
rn.ch/event/782251/contributions/3442267/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442267/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Carving out the Swampland of 6D SCFTs
DTSTART;VALUE=DATE-TIME:20190625T143000Z
DTEND;VALUE=DATE-TIME:20190625T144500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442266@indico.cern.ch
DESCRIPTION:Speakers: Florent Baume (IFT Madrid)\nDemanding unitarity of c
orrelators can put severe constraints on the allowed spectra of SCFTs. We
discuss such constraints in the context of half-BPS operators in six dimen
sions using the conformal bootstrap and possible lower bounds on central c
harges one gets for theories with flavour. In particular we relate these b
ounds with results from F-theory and the size of its swampland.\n\nhttps:/
/indico.cern.ch/event/782251/contributions/3442266/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442266/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Geometrical destabilisation of light fields in String Inflation
DTSTART;VALUE=DATE-TIME:20190625T153000Z
DTEND;VALUE=DATE-TIME:20190625T154500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442259@indico.cern.ch
DESCRIPTION:Speakers: Veronica Guidetti (University of Bologna)\nA typical
feature of 4D string models is the presence\, at tree-level\, of a pletho
ra of massless fields called moduli. Some of them are axion-like fields wh
ich become massive only via tiny non-perturbative effects which tend to ma
ke them naturally very light. When these fields live on a curved manifold
a geometrical destabilisation of the inflationary trajectory can be induce
d since the growth of the isocurvature perturbations quickly brings the sy
stem in the non-perturbative regime.\n\nhttps://indico.cern.ch/event/78225
1/contributions/3442259/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442259/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On the stability of SUSY breaking Warped Throats.
DTSTART;VALUE=DATE-TIME:20190625T151500Z
DTEND;VALUE=DATE-TIME:20190625T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442258@indico.cern.ch
DESCRIPTION:Speakers: Eduardo Garcia-Valdecasas Tenreiro (IFT UAM-CSIC)\nI
will discuss the results in hep.th/1810.07673. A local version of the no
non-SUSY-AdS conjecture is proposed for warped throats. This essentially b
ans warped throats with a gravitational dual that locally looks AdS. Sever
al examples are given.\n\nhttps://indico.cern.ch/event/782251/contribution
s/3442258/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442258/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holography\, relaxions and the self-tuning of the cosmological con
stant
DTSTART;VALUE=DATE-TIME:20190625T144500Z
DTEND;VALUE=DATE-TIME:20190625T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442255@indico.cern.ch
DESCRIPTION:Speakers: Yuta Hamada (University of Crete)\nHolography allows
a mechanism for the self-tuning of the cosmological constant by consideri
ng a universe brane embedded in a bulk dual to a holographic QFT. This mec
hanism was shown recently to work bypassing earlier problems with bad bulk
singularities. By including also a bulk axion (dual to an instanton densi
ty of the holographic QFT)\, we consider the interplay of the self-tuning
mechanism and the Electroweak symmetry breaking on the universe brane. Hol
ography provides a large number of saddle point selftuning solutions. Such
an approach links relaxion ideas for the hierarchy problem to the self-tu
ning mechanism of the cosmological constant.\n\nhttps://indico.cern.ch/eve
nt/782251/contributions/3442255/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442255/
END:VEVENT
BEGIN:VEVENT
SUMMARY:U(1)R inspired inflation model in no-scale supergravity
DTSTART;VALUE=DATE-TIME:20190625T143000Z
DTEND;VALUE=DATE-TIME:20190625T144500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442254@indico.cern.ch
DESCRIPTION:Speakers: Shaaban Khalil Ibrahim (ENHEP Egyptian Network of Hi
gh Energy Physics (EG))\nWe consider a cosmological inflation scenario bas
ed on a no-scale supergravity sector with U(1)R symmetry. It is shown that
a tree level U(1)R symmetric superpotential alone does not lead to a slow
ly rolling scalar potential. A deformation of this tree level superpotenti
al by including an explicit R symmetry breaking term beyond the renormaliz
able level is proposed. The resulting potential is found to be similar (bu
t not exactly the same) to the one in the Starobinsky inflation model. We
emphasize that for successful inflation\, with the scalar spectral index n
s∼0.96and the tensor-to-scalar ratio r\n\nhttps://indico.cern.ch/event/7
82251/contributions/3442254/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442254/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shift Symmetric Orbital Inflation
DTSTART;VALUE=DATE-TIME:20190625T134500Z
DTEND;VALUE=DATE-TIME:20190625T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442277@indico.cern.ch
DESCRIPTION:Speakers: Yvette Welling (Deutsches Elektronen-Synchrotron DES
Y)\nRecent swampland conjectures highlight again the importance of finding
viable scenarios for inflation that are not strictly single-field. In par
ticular\, one may wonder whether there are multi-field inflationary scenar
ios that have a similar phenomenology to single field inflation. We presen
t a family of exact models of inflation - dubbed Orbital Inflation - in wh
ich the multi-field effects are significant\, but the phenomenology remain
s similar to single field inflation. This simple predictions have a dynami
c origin\, and are non-trivial\, as the isocurvature perturbations are exa
ctly massless. The effective action of perturbations inherits a symmetry f
rom an equivalence between background solutions. We comment on how our res
ults could be connected to symmetries of the UV theory.\n\nhttps://indico.
cern.ch/event/782251/contributions/3442277/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442277/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Spontaneous dark-matter mass generation along cosmological attract
ors in string theory
DTSTART;VALUE=DATE-TIME:20190625T133000Z
DTEND;VALUE=DATE-TIME:20190625T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442276@indico.cern.ch
DESCRIPTION:Speakers: Thibaut Coudarchet (Ecole Polytechnique)\nI will tal
k about a new scenario for generating a relic density of non-relativistic
dark matter in the framework of heterotic string theory with spontaneously
broken supersymmetry and at finite temperature. In this scenario\, contra
ry to the standard thermal freeze-out process\, dark-matter particles are
produced while they are still relativistic and then decouple from the ther
mal bath because of a sudden increase of their mass above the universe tem
perature. The mass increase is sourced by the destabilization of a modulus
triggered when the temperature of the universe drops below the supersymme
try breaking scale. This phase transition is enforced to take place in cer
tain models thanks to a cosmological attractor mechanism.\n\nhttps://indic
o.cern.ch/event/782251/contributions/3442276/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442276/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Black Hole Superradiance Constraints on the KS Axiverse
DTSTART;VALUE=DATE-TIME:20190625T124500Z
DTEND;VALUE=DATE-TIME:20190625T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442273@indico.cern.ch
DESCRIPTION:Speakers: Viraf Mehta (University of Goettingen)\nWe discuss i
mposing physical constraints on the recently generated Kreuzer-Skarke Axiv
erse\, namely the application of mass limits coming from black hole superr
adiance. We briefly touch on how our approach can also be applied to other
physical limits on axion masses and decay constants to rule out previousl
y viable string backgrounds.\n\nhttps://indico.cern.ch/event/782251/contri
butions/3442273/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442273/
END:VEVENT
BEGIN:VEVENT
SUMMARY:No-Go theorems for ekpyrosis from ten-dimensional supergravity
DTSTART;VALUE=DATE-TIME:20190625T123000Z
DTEND;VALUE=DATE-TIME:20190625T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442272@indico.cern.ch
DESCRIPTION:Speakers: Kunihito Uzawa (Kwansei Gakuin University)\nIn this
talk\, we present whether the new ekpyrotic scenario can be embedded into
ten-dimensional supergravity. We use that the scalar potential obtained fr
om flux compactifications of type II supergravity with sources has a unive
rsal scaling with respect to the dilaton and the volume mode. Similar to t
he investigation of inflationary models\, we find very strong constraints
ruling out ekpyrosis from analyzing the fast-roll conditions. We conclude
that flux compactifications tend to provide potentials that are neither to
o flat and positive (inflation) nor too steep and negative (ekpyrosis).\n\
nhttps://indico.cern.ch/event/782251/contributions/3442272/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442272/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Axion RG flows and a bound on axion excursions
DTSTART;VALUE=DATE-TIME:20190625T133000Z
DTEND;VALUE=DATE-TIME:20190625T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442252@indico.cern.ch
DESCRIPTION:Speakers: Lukas Witkowski (Laboratoire APC)\nI will discuss ax
ionic holographic RG flow solutions in the context of general Einstein-Axi
on-Dilaton theories\, where a non-trivial axion profile is dual to the (no
n-perturbative) running of the theta-term for the corresponding instanton
density operator. I will show that a non-trivial axion solution is incompa
tible with a non-trivial (holographic) IR conformal fixed point. Imposing
a suitable axion regularity condition allows to select the IR geometry in
a unique way. Interestingly\, the regularity condition always implies a fi
nite allowed range for the axion source parameter in the UV. This translat
es into the existence of a finite (but large) number of saddle-points in t
he large N limit. This ties in well with axion-swampland conjectures.\n\nh
ttps://indico.cern.ch/event/782251/contributions/3442252/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442252/
END:VEVENT
BEGIN:VEVENT
SUMMARY:O(D\,D) completion of the Friedmann equations
DTSTART;VALUE=DATE-TIME:20190625T131500Z
DTEND;VALUE=DATE-TIME:20190625T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442251@indico.cern.ch
DESCRIPTION:Speakers: Stephen Angus (IBS Center for Theoretical Physics of
the Universe)\nString theory suggests a unique and unambiguous augmentati
on of General Relativity\, in which the entire closed-string massless NS-N
S sector is promoted to stringy graviton fields. O(D\,D) T-duality then un
iquely fixes the coupling of this 'Stringy Gravity' to other matter\, lead
ing to a generalization of Einstein's equations with an enhanced energy-mo
mentum tensor. In this talk I will explore the resulting cosmological impl
ications and show that this yields an enriched framework beyond typical st
ring cosmology\, with solutions characterized by two equation-of-state par
ameters (w\,\\lambda) rather than one (w). This includes a line in paramet
er space where GR-like solutions with constant dilaton are admitted for an
y w. However\, while apparently present on the GR line\, there is no de Si
tter solution arising from an O(D\,D)-symmetric cosmological constant or s
calar field with positive energy density\, suggesting that de Sitter may s
imply be an artefact of GR and belong to the swampland.\n\nhttps://indico.
cern.ch/event/782251/contributions/3442251/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442251/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Two-field Cosmological alpha-attractors with Noether Symmetry
DTSTART;VALUE=DATE-TIME:20190625T130000Z
DTEND;VALUE=DATE-TIME:20190625T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442250@indico.cern.ch
DESCRIPTION:Speakers: Lilia Anguelova (Utrecht University)\nWe study Noeth
er symmetries in two-field cosmological alpha-attractors\, investigating t
he case when the scalar manifold is an elementary hyperbolic surface. This
encompasses and generalizes the case of the Poincare disk. We solve the c
onditions for the existence of a `separated' Noether symmetry and find the
form of the scalar potential compatible with such\, for any elementary hy
perbolic surface. For this class of symmetries\, we find that the alpha-pa
rameter must have a fixed value. Using those Noether symmetries\, we also
obtain many exact solutions of the equations of motion of these models\, w
hich were studied previously with numerical methods.\n\nhttps://indico.cer
n.ch/event/782251/contributions/3442250/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442250/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Testing the weak gravity conjecture in type I strings with broken
supersymmetry
DTSTART;VALUE=DATE-TIME:20190625T124500Z
DTEND;VALUE=DATE-TIME:20190625T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442261@indico.cern.ch
DESCRIPTION:Speakers: Quentin Bonnefoy ()\nI will discuss tests of the wea
k gravity conjecture in the presence of supersymmetry breaking\, using typ
e I string theory with supersymmetry broken by compactification (à la Sch
erk-Schwarz). Such a (perturbative) setting allows for the presence of run
away potentials (here for the compactification radius)\, which is the only
possibility if one accepts the non-existence of de Sitter vacua\, thus en
abling one to test the mutual consistency of the weak gravity and the de S
itter conjectures. Although the weak gravity conjecture is valid in the de
compactification limit\, for fixed values of the radius there are short-ra
nged attractive D1-branes interactions\, which would naively imply a viola
tion of the weak gravity conjecture for the associated R-R 2-form. I will
argue however that at one-loop level the effective tension of the branes d
ecreases such that there is a long-ranged repulsive force\, which should c
ome from higher-loops. The conclusion is that the weak gravity conjecture
should be respected provided that the string coupling is not extremely sma
ll.\n\nhttps://indico.cern.ch/event/782251/contributions/3442261/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442261/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Swampland Distance Conjecture for Kähler moduli and emergence
DTSTART;VALUE=DATE-TIME:20190625T130000Z
DTEND;VALUE=DATE-TIME:20190625T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442262@indico.cern.ch
DESCRIPTION:Speakers: Pierre Corvilain (Utrecht U)\nThe Swampland Distance
Conjecture (SDC) states that an infinite tower of modes becomes exponenti
ally light when approaching a point at infinite distance in moduli space.
At the large volume singularities of the Kähler moduli spaces of Calabi-Y
au threefold compactifications\, we use the monodromy matrices to explicit
ly construct the towers of states satisfying the SDC\, which consist of ch
arge orbits of D2-D0 bound states. We further focus on the case where the
CY is elliptically fibered\, in which case the modular symmetry of the mod
uli space allows to transfer the orbits to the small fiber regime. In M-th
eory compactifications\, which are dual to F-theory compactifications incl
uding an extra circle\, some orbits always correspond to Kaluza-Klein towe
rs along that circle. Integrating them out yields an infinite distance in
the moduli space\, adding support to the emergence proposal. More generall
y\, we show that the exponential mass behavior and the infinite field dist
ance are automatic consequences of integrating out any tower of states up
to the species scale\, as long as the tower gets compressed as we move in
the moduli space.\n\nhttps://indico.cern.ch/event/782251/contributions/344
2262/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442262/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Strong Scalar Weak Gravity Conjecture and Some Implications
DTSTART;VALUE=DATE-TIME:20190625T131500Z
DTEND;VALUE=DATE-TIME:20190625T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442263@indico.cern.ch
DESCRIPTION:Speakers: Eduardo Gonzalo ()\nWe propose a new version of the
scalar Weak Gravity Conjecture (WGC) which would apply to any scalar field
coupled to quantum gravity. For a single scalar it is given by the differ
ential constraint $(V'')^2\\leq (2V'''^2- V''V'''')M_{\\text{p}}^2$\, wher
e $V$ is the scalar potential. It corresponds to the statement that self-i
nteractions of a scalar must be stronger than gravity for any value of the
scalar field. We find that the solutions which saturate the bound corresp
ond to towers of extremal states with mass $m^2(\\phi)=m_0^2/((R/m)^2+1/(n
R)^2)$\, with $R^2=e^\\phi$\, consistent with the emergence of an extra di
mension at large or small $R$ and the existence of extended objects (strin
gs). These states act as WGC states for the scalar $\\phi$. It is also con
sistent with the distance swampland conjecture with a built-in duality sym
metry. All of this is remarkable since neither extra dimensions nor string
theory are put in the theory from the beginning\, but they emerge. This i
s quite analogous to how the 11-th dimension appears in M-theory from towe
rs of Type IIA solitonic $D0$-branes. From this constraint one can derive
several swampland conjectures from a single principle. In particular one f
inds that an axion potential is only consistent if $f\\leq M_{\\text{p}}$\
, recovering a result already conjectured from other arguments. The conjec
ture has far reaching consequences and applies to several interesting phys
ical systems: i) Among chaotic inflation potentials only those asymptotica
lly linear may survive. ii) If applied to the radion of the circle compact
ification of the Standard Model to 3D with Dirac neutrinos\, the constrain
t implies that the 4D cosmological constant scale must be larger than the
mass of the lightest neutrino\, which must be in normal hierarchy. It also
puts a constraint on the EW scale\, potentially explaining the hierarchy
problem. This recovers and improves results already obtained by applying t
he AdS swampland conjecture\, but in a way which is independent from UV ph
ysics. iii) It also constraints simplest moduli fixing string models. The
simplest KKLT model is compatible with the constraints but the latter may
be relevant for some choices of parameters.\n\nhttps://indico.cern.ch/even
t/782251/contributions/3442263/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442263/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Swampland Distance Conjecture and Towers of Tensionless Branes
DTSTART;VALUE=DATE-TIME:20190625T133000Z
DTEND;VALUE=DATE-TIME:20190625T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442264@indico.cern.ch
DESCRIPTION:Speakers: Alvaro Herraez (Universidad Autónoma de Madrid/ Ins
tituto de Física Teórica UAM)\nThe Swampland Distance Conjecture states
that at infinite distance in the scalar moduli space an infinite tower of
particles becomes exponentially massless. In the context of 4d Calabi-Yau
compactifications we find that not only towers of particles\, but also tow
ers of strings and domain walls generally become tensionless at different
infinite distance points. For $\\mathcal{N}=1$ Calabi-Yau orientifolds in
type IIA we present the monodromy orbits of domain walls. Finally\, we sho
w the structure of energy scales of these towers at different infinite dis
tance points in simple toroidal compactifications\, finding that they may
occur at the KK or the fundamental string scales. We end with some comment
s on possible implications of the presence of these towers of extended obj
ects (emergence\, non-geometric fluxes\, 4d vacua…).\n\nhttps://indico.c
ern.ch/event/782251/contributions/3442264/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442264/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swampland Distance Conjecture for One-Parameter Calabi-Yau Threefo
lds
DTSTART;VALUE=DATE-TIME:20190625T134500Z
DTEND;VALUE=DATE-TIME:20190625T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442265@indico.cern.ch
DESCRIPTION:Speakers: Abhinav Joshi (University of Bonn)\nWe investigate t
he swampland distance conjecture (SDC) in the complex moduli space of type
II compactifications on one-parameter Calabi-Yau threefolds. This class o
f manifolds contains hundreds of examples and\, in particular\, a subset o
f 14 geometries with hypergeometric differential Picard-Fuchs operators. O
f the four principal types of singularities that can occur — specified b
y their limiting mixed Hodge structure — only the K-points and the large
radius points (or more generally the M-points) are at infinite distance a
nd therefore of interest to the SDC. We argue that the conjecture is fulfi
lled at the K- and the M-points\, including models with several M-points\,
using explicit calculations in hypergeometric models which contain typica
l examples of all these degenerations. Together with previous work on the
large radius points\, this suggests that the SDC is indeed fulfilled for o
ne-parameter Calabi-Yau spaces.\n\nhttps://indico.cern.ch/event/782251/con
tributions/3442265/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442265/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Three Swampland Variations
DTSTART;VALUE=DATE-TIME:20190625T093000Z
DTEND;VALUE=DATE-TIME:20190625T100000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441859@indico.cern.ch
DESCRIPTION:Speakers: Ralph Blumenhagen ()\nThree different issues will be
discussed and explicitly exemplified that are related to the dS swampland
conjecture and are motivated by the questions: Does it hold away from the
perturbative regime? What are the logical consequences if it is true? Can
one broaden the perspective to circumvent the dS no-go consequences?\n\nh
ttps://indico.cern.ch/event/782251/contributions/3441859/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441859/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Polarisation everywhere
DTSTART;VALUE=DATE-TIME:20190626T093000Z
DTEND;VALUE=DATE-TIME:20190626T100000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441873@indico.cern.ch
DESCRIPTION:Speakers: Thomas Van Riet ()\nI discuss recent criticism relat
ed to controlled SUSY-breaking and the link with the Swampland program: I
explain how anti-brane singularities have been a red herring and that sup
ergravity by itself is sufficient to understand why. In particular this wa
s not yet understood for anti-D6 branes. The role of brane polarisation is
crucial in this regard. Loss of control over anti-branes potentially aris
es when there is a non-trivial interplay with moduli stabilisation and the
literature on this problem is polarised as well. Finally I discuss the se
emingly loosely related concept of weak gravity and cosmic censorship for
which an analogy between scalar field polarisation with brane polarisation
seems to suggest a potential analytic derivation of how cosmic censorship
implies weak gravity.\n\nhttps://indico.cern.ch/event/782251/contribution
s/3441873/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441873/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Asymptotic flux vacua and the Swampland
DTSTART;VALUE=DATE-TIME:20190625T073000Z
DTEND;VALUE=DATE-TIME:20190625T080000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441854@indico.cern.ch
DESCRIPTION:Speakers: Irene Valenzuela ()\nThe Swampland constraints can b
e often understood as a quantum gravity obstruction to restore global symm
etries at infinite field distance. This constrains the physics near the la
rge field limits by requiring the presence of new light states but also co
nstraining the form of the kinetic terms\, gauge couplings and the scalar
potential of the effective theory. In this talk\, I will focus on the scal
ar potential and the structure of flux vacua at the asymptotic regions of
the complex structure moduli space of M-theory compactified on a Calabi-Ya
u fourfold. Interestingly\, we can use powerful mathematical theorems to d
erive the asymptotic form of the flux induced scalar potential near any la
rge field limit and check the Swampland conjectures. We classify all possi
ble two large field limits in Calabi-Yau fourfolds and check that the pote
ntial never admits deSitter vacua at parametric control.\n\nhttps://indico
.cern.ch/event/782251/contributions/3441854/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441854/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sypersymmetry breaking and the swampland
DTSTART;VALUE=DATE-TIME:20190628T150000Z
DTEND;VALUE=DATE-TIME:20190628T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441918@indico.cern.ch
DESCRIPTION:Speakers: Emilian Dudas (Ecole Polytechnique)\nWe investigate
string models with broken supersymmetry from the viewpoint of swampland co
njectures.\n\nhttps://indico.cern.ch/event/782251/contributions/3441918/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441918/
END:VEVENT
BEGIN:VEVENT
SUMMARY:R-Parity Violating Decays of Chargino and Neutralino LSPs in the B
-L MSSM
DTSTART;VALUE=DATE-TIME:20190624T143000Z
DTEND;VALUE=DATE-TIME:20190624T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441849@indico.cern.ch
DESCRIPTION:Speakers: Burt Ovrut (University of Pennsylvania)\nThe R-parit
y violating decays of Wino Chargino and Bino Neutralino LSPs are analyzed
within the context of the B-L MSSM. These LSPs correspond to statistically
determined soft supersymmetry breaking parameters which\, when renormaliz
ation group evolved to lower energy\, lead to an effective theory satisfyi
ng all phenomenological requirements. The explicit RPV decay channels of t
hese LSPs to standard model particles\, the analytic and numerical decay r
ates and the associated branching ratios are presented.\n\nhttps://indico.
cern.ch/event/782251/contributions/3441849/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441849/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Two Faces of T-branes
DTSTART;VALUE=DATE-TIME:20190624T093000Z
DTEND;VALUE=DATE-TIME:20190624T100000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441840@indico.cern.ch
DESCRIPTION:Speakers: Raffaele Savelli ()\nT-branes are intrinsically non-
Abelian brane configurations whose exotic features are not fully captured
by geometry alone. The purpose of this talk is to give evidence for the ex
istence of a brane-brane duality connecting T-branes to collections of ord
inary Abelian branes\, which encode the T-brane data in their non-trivial
worldvolume curvature. The dual picture is argued to be reliable when the
traditional description of T-branes in terms of Hitchin systems breaks dow
n due to large field variations.\n\nhttps://indico.cern.ch/event/782251/co
ntributions/3441840/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441840/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Strong WGC from the Modular Bootstrap
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T083000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441799@indico.cern.ch
DESCRIPTION:Speakers: Miguel Montero (KU Leuven)\nIn its mildest version\,
the Weak Gravity Conjecture postulates the existence of superextremal par
ticles of any charge Q. This is not really a constraint on the low-energy
EFT\, since this charge could a priori be arbitrarily large\, resulting in
a very massive WGC particle. This applies to (quasi-)sublattice versions
of the conjecture too\, where the role of Q is played by the index of the
WGC sublattice. In this talk we will see how\, in the context of worldshee
t string theory\, it is possible to obtain a universal upper bound on Q in
the bosonic sector from the modular bootstrap\, thus obtaining a strong f
orm of the WGC in the closed string sector.\n\nhttps://indico.cern.ch/even
t/782251/contributions/3441799/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441799/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Branes and the Swampland
DTSTART;VALUE=DATE-TIME:20190624T070000Z
DTEND;VALUE=DATE-TIME:20190624T073000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441797@indico.cern.ch
DESCRIPTION:Speakers: Gary Shiu (University of Wisconsin & HKUST)\nComplet
eness of the spectrum of charged branes in a quantum theory of gravity nat
urally motivates the question of whether consistency of what lives on the
branes can be used to explain some of the Swampland conditions. In this pa
per we focus on consistency of what lives on string probes\, to show some
of the theories with N=(1\,0) supersymmetry in 10d and 6d\, which are o
therwise consistent looking\, belong to the Swampland. Gravitational and g
auge group anomaly inflow on these probes can be used to compute the gravi
tational central charges (c_L\,c_R) as well as the level of the group's cu
rrent algebra k_L. The fact that the left-moving central charge on the str
ing probes should be large enough to allow unitary representations of the
current algebra with a given level\, can be used to rule out some theories
. This in particular explains why it has not been possible to construct th
e corresponding theories from string theory.\n\nhttps://indico.cern.ch/eve
nt/782251/contributions/3441797/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441797/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Flatness of Axionic Potentials and a 10d Approach to KKLT
DTSTART;VALUE=DATE-TIME:20190626T100000Z
DTEND;VALUE=DATE-TIME:20190626T103000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441874@indico.cern.ch
DESCRIPTION:Speakers: Arthur Hebecker (Heidelberg University)\nAfter a bri
ef summary of some recent work on flat axionic potentials in the regime of
subplanckian decay constants\, I will turn to the controversial topic of
a 10d description of the KKLT scenario. In particular\, I will outline a p
roposal for completing the coupling of D7-brane gauginos to bulk fields. B
uilding on this\, I will then argue that the analysis of 10d Einstein equa
tions appears to be consistent with the original 4d method of KKLT\, inclu
ding both the AdS vacuum and its uplift to metastable de Sitter.\n\nhttps:
//indico.cern.ch/event/782251/contributions/3441874/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441874/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The String Landscape\, the Swampland\, and the Observed Universe
DTSTART;VALUE=DATE-TIME:20190626T130000Z
DTEND;VALUE=DATE-TIME:20190626T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441875@indico.cern.ch
DESCRIPTION:Speakers: Cumrun Vafa (Harvard University)\nI review ideas rel
ated to the landscape of string vacua and restrictions it suggests on the
existence of consistent quantum gravitational theories known as swampland
conditions. Some implications for particle physics and cosmology are disc
ussed.\n\nhttps://indico.cern.ch/event/782251/contributions/3441875/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441875/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Effective multi-axion cosmology and constraints from black hole su
perradiance
DTSTART;VALUE=DATE-TIME:20190627T153000Z
DTEND;VALUE=DATE-TIME:20190627T154500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442307@indico.cern.ch
DESCRIPTION:Speakers: Matthew Stott (King's College London)\nConsistent st
ring theory frameworks of quantum gravity often predict the existence of a
plethora of ultralight pseudoscalar degrees of freedom forming the phenom
enological landscape of the string axiverse. The complexity of the extra-d
imensional compactification manifold and vacua in these models indicate th
ese fields may well possess parameters spanning many decades\, covering co
smologically significant scales. If the fields phenomenologically defining
parameters\, the axion mass\, m_a\, and (effective) decay constant\, f_a\
, fall in specific ranges\, then they may contribute to the cosmological d
ark sector as either dark matter or an effective cosmological constant. It
is important therefore\, to quantify the statistical properties for such
fields under the assumption of a multifarious scalar component in the low
energy spectrum and the viability these ubiquitous elements of string mode
ls provide correct theoretic solutions to cosmological paradigms. The powe
rful asymptotic nature of the limiting spectral distributions of large ran
dom matrices has incorporated itself into various areas associated to mult
i-field axion cosmology. These include models of inflation\, quintessence\
, dark sector cosmology and explicit forms of the superpotential Hessian.
The complexities of dealing with the complete UV theory space is often red
uced by considering a series of simple yet very powerful nomothetic princi
ples. These considerations see the theoretic conjecture of the string axiv
erse modelled as an effective field theory which encodes the theoretical u
ncertainty from the UV limit in the high-dimensional matrices present in t
he effective Lagrangian\, greatly reducing the potential dimensionality of
the model parameter space. In order to realise these objectives we will i
ntroduce a series of random matrix theory (RMT) inspired models based on a
xion field alignment and multivariate analysis considerations. We will als
o present an overview of an effective approach to the spectrum arising fro
m the superpotential in explicit realisations of the string axiverse in G_
2 compactified M-theory\, which take universal forms at the level of an ef
fective description using stochastic model parameters. Such models can be
used to test the viability of axion contributions to the cosmic history us
ing hierarchical Bayesian inference models on the simplified parameter spa
ce\, along with possessing a susceptibility to machine learning techniques
to draw conclusions on the validity of the existence of a string axiverse
in the ultralight sector of cosmology. We will also demonstrate how these
models can be used to draw inferences on the axion parameter space\, usin
g astrophysical spin measurements of stellar binary and supermassive black
hole systems\, which can exclude the existence of fields spanning a large
portion of the ultralight bosonic mass parameter space\, via the superrad
iance phenomenon. We will explore how these measurements are used to const
rain properties of the universal statistical distributions in effective ax
iverse models\, specifically the mass ranges and allowed numbers of fields
present in the spectrum. Such a methodology generally excludes N ≥ 30 a
xion-like fields with a range of mass distribution widths and central valu
es spanning many orders of magnitude\, covering axion phenomenologies impo
rtant to the dark sector of cosmology and grand unified theories.\n\nhttps
://indico.cern.ch/event/782251/contributions/3442307/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442307/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instantons Away From Equilibrium
DTSTART;VALUE=DATE-TIME:20190627T151500Z
DTEND;VALUE=DATE-TIME:20190627T153000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442306@indico.cern.ch
DESCRIPTION:Speakers: John Stout (University of Amsterdam)\nNon-perturbati
vely generated effective potentials play an extremely useful\, often criti
cal\, role in string and inflationary model building. These potentials are
typically computed by Euclidean methods (i.e. instantons) which assume th
e system is in equilibrium. For systems out of equilibrium---for instance\
, an inflaton rolling down its potential---we expect there are corrections
to the semi-classical evolution due to transient phenomena. How do we det
ermine these corrections\, and when do they become large? I will introduce
a picture of non-perturbative effects that does not rely on the Euclidean
path integral and answer these questions for a wide class of toy quantum
mechanical models.\n\nhttps://indico.cern.ch/event/782251/contributions/34
42306/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442306/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Inflation and the Swampland Distance Conjecture
DTSTART;VALUE=DATE-TIME:20190627T144500Z
DTEND;VALUE=DATE-TIME:20190627T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442304@indico.cern.ch
DESCRIPTION:Speakers: Marco Scalisi (KU Leuven)\nIn this talk\, we discuss
the significance for inflation of the Swampland Distance Conjecture\, a p
roposal for a quantum gravity constraint acting at infinite distances.\n\n
https://indico.cern.ch/event/782251/contributions/3442304/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442304/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Triangulating the Landscape
DTSTART;VALUE=DATE-TIME:20190627T133000Z
DTEND;VALUE=DATE-TIME:20190627T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442302@indico.cern.ch
DESCRIPTION:Speakers: Andres Rios (Cornell University)\nOne of the main co
ntributors to the vastness of the string landscape is the immense number o
f Calabi-Yau (CY) manifolds on which the theory can be compactified. Curre
ntly\, one of the largest sets of CYs is obtained from hypersurfaces in to
ric varieties\, which result from fine\, regular\, star triangulations (FR
STs) of reflexive polytopes. In this talk I will present new developments
in the study of FRSTs. I will describe how the space of FRSTs is connected
and a derivation for a new upper bound for the total number of FRSTs\, an
d hence for the number of hypersurface CYs. I will also discuss prospects
for determining what a "typical" triangulation (and CY) looks like and the
counting-measure predictions that could be made from that.\n\nhttps://ind
ico.cern.ch/event/782251/contributions/3442302/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442302/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Branes\, quiver gauge theories and discrete symmetries
DTSTART;VALUE=DATE-TIME:20190627T130000Z
DTEND;VALUE=DATE-TIME:20190627T131500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442300@indico.cern.ch
DESCRIPTION:Speakers: Jamie Rogers (Liverpool University)\nThe spaces of z
ero-energy configurations (moduli spaces of vacua) of supersymmetric QFTs
are richly geometrically structured. Realizing quiver gauge theories as th
e IR descriptions of brane configurations has allowed the recent developme
nt of numerous techniques to examine this geometry. I will discuss some of
these techniques and how they can be used to investigate the local geomet
ry of moduli spaces of vacua\, even if a global description is unavailable
. I will also remark on how studying the manner in which these techniques
change for theories with discrete symmetries can give us clues as to the p
henomenology of such theories.\n\nhttps://indico.cern.ch/event/782251/cont
ributions/3442300/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442300/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cosmological constant at finite string coupling in F-theory flux c
ompactification
DTSTART;VALUE=DATE-TIME:20190627T124500Z
DTEND;VALUE=DATE-TIME:20190627T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442299@indico.cern.ch
DESCRIPTION:Speakers: Hajime Otsuka (KEK)\nWe examine vacuum structures of
effective theories of moduli fields in the frameworks of Type IIB and F-t
heory ﬂux compactiﬁcations. For two explicit examples\, we numerically
investigate the distributions of a huge number of local minima of the eff
ective potential in the complex structure and dilaton directions in moduli
fields. Interestingly\, our results for the distributions of non-supersym
metric minima exhibit that larger string coupling generically leads to sma
ller vacuum energy/cosmological constant.\n\nhttps://indico.cern.ch/event/
782251/contributions/3442299/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442299/
END:VEVENT
BEGIN:VEVENT
SUMMARY:M5 branes and Theta Functions
DTSTART;VALUE=DATE-TIME:20190627T123000Z
DTEND;VALUE=DATE-TIME:20190627T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442297@indico.cern.ch
DESCRIPTION:Speakers: Rui Sun (Yau mathematical science center\, Tsinghua
University)\nWe propose quantum states for Little String Theories arising
from M5 branes probing A- and D-type singularities. This extends Witten's
picture of M5 brane partition functions as theta functions to this more ge
neral setup. Compactifying the world-volume of the five-branes on a two-to
rus\, we find that the corresponding theta functions are sections of line
bundles over complex 4-tori. This formalism allows us to derive Seiberg-Wi
tten curves for the resulting four-dimensional theories.\n\nhttps://indico
.cern.ch/event/782251/contributions/3442297/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442297/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instantons and Infinite Distances
DTSTART;VALUE=DATE-TIME:20190627T134500Z
DTEND;VALUE=DATE-TIME:20190627T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442296@indico.cern.ch
DESCRIPTION:Speakers: Max Wiesner (IFT UAM-CSIC)\nWe consider geodesics of
infinite length in the (classical) hypermultiplet moduli spaceof type II
Calabi-Yau compactifications. When approaching such infinite distance poin
ts\, a large amount of D-instantons develop an exponentially suppressed ac
tion \,substantially modifying the moduli space metric. In the corrected m
etric the path length becomes finite\, although the metric at its endpoint
remains singular. The instanton effects also modify the 4d Planck mass su
ch that\, in order to keep it finite\, the string scale has to be lowered.
Our results can be translated\, via the c-map\, to the physics around poi
nts of infinite distance in the vector multiplet moduli space where the Sw
ampland Distance Conjecture and the Emergence Proposal have been discussed
\, and provide further evidence for them.\n\nhttps://indico.cern.ch/event/
782251/contributions/3442296/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442296/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Consistent truncation and de Sitter space from gravitational insta
ntons
DTSTART;VALUE=DATE-TIME:20190627T134500Z
DTEND;VALUE=DATE-TIME:20190627T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442289@indico.cern.ch
DESCRIPTION:Speakers: Robin Terrisse (Institut de Physique Nucléaire de L
yon)\nI will present a four-dimensional consistent truncation of type IIA
supergravity in the presence of fermionic condensates generated by gravita
tional instantons. The condensates are controlled by the ratio of the char
acteristic length of the internal Calabi-Yau to the string length\, and ca
n be fine-tuned to be dominant in a region of large volume and small strin
g coupling. The consistent truncation admits de Sitter solutions supported
by the condensates\, subject to certain validity conditions.\n\nhttps://i
ndico.cern.ch/event/782251/contributions/3442289/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442289/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Scaling limits of dS vacua and the swampland
DTSTART;VALUE=DATE-TIME:20190627T133000Z
DTEND;VALUE=DATE-TIME:20190627T134500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442288@indico.cern.ch
DESCRIPTION:Speakers: Christoph Roupec (TU Vienna)\nI discuss the properti
es of massive type IIA flux compactifications. In particular\, I will talk
about in which cases one can obtain dS vacua at large volume and small co
upling. The scaling symmetries will also be discussed in a concrete exampl
e. The conclusion of the talk will be that the large volume and weak coupl
ing limit requires a large number of O6-planes. Since these are bound for
any given compactification space one cannot get arbitrarily good control o
ver α 0 and string loop corrections.\n\nhttps://indico.cern.ch/event/7822
51/contributions/3442288/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442288/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discrete Flavor Symmetries from Orbifold GUTs
DTSTART;VALUE=DATE-TIME:20190625T153000Z
DTEND;VALUE=DATE-TIME:20190625T154500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442282@indico.cern.ch
DESCRIPTION:Speakers: Andreas Muetter (Technical University of Munich)\nIn
this talk\, we show that in orbifold GUT models discrete symmetries can b
e understood as remnants of gauge symmetries that are broken by orbifold b
oundary conditions. We present a systematic way to determine the discrete
symmetries that survive the orbifolding. In particular\, we derive univers
al conditions that need to be fulfilled in order to preserve any discrete
symmetry. Finally\, some implications for flavor model building are discus
sed.\n\nhttps://indico.cern.ch/event/782251/contributions/3442282/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442282/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gravitational waves from axion clumps
DTSTART;VALUE=DATE-TIME:20190625T143000Z
DTEND;VALUE=DATE-TIME:20190625T144500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442278@indico.cern.ch
DESCRIPTION:Speakers: Sichun Sun (Sapienza University of Rome)\nAxionic ob
jects such as axion miniclusters and axion clouds around spinning black ho
les induce parametric resonances of electromagnetic waves through the axio
n-photon interaction. Here we discuss various difference gravitational sou
rces from such objects through similar mechanisms.\n\nhttps://indico.cern.
ch/event/782251/contributions/3442278/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442278/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Moduli Portal between visible and hidden sectors
DTSTART;VALUE=DATE-TIME:20190625T131500Z
DTEND;VALUE=DATE-TIME:20190625T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442275@indico.cern.ch
DESCRIPTION:Speakers: Igor Broeckel (University of Bologna)\nWe investigat
e the possibility of Moduli mediators between the visible and hidden secto
r in the context of the LVS.\n\nhttps://indico.cern.ch/event/782251/contri
butions/3442275/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/782251/contributions/3442275/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fibers and 5d SCFTs
DTSTART;VALUE=DATE-TIME:20190625T150000Z
DTEND;VALUE=DATE-TIME:20190625T151500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442268@indico.cern.ch
DESCRIPTION:Speakers: Craig Lawrie (University of Pennsylvania)\nWe will c
onsider the construction of 5d superconformal field theories by studying M
-theory compactified on a non-compact Calabi--Yau threefold\, which is rel
ated to the elliptically fibered Calabi--Yau threefold that\, in F-theory\
, constructs the 6d SCFT that circle reduces to said 5d SCFT. We explain h
ow many interesting features of 5d SCFTs\, like flavour symmetry enhanceme
nt\, arise from the elliptic fibration.\n\nhttps://indico.cern.ch/event/78
2251/contributions/3442268/
LOCATION:CERN 503/1-001 - Council Chamber
URL:https://indico.cern.ch/event/782251/contributions/3442268/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The supersymmetric anti-D3-brane action in KKLT
DTSTART;VALUE=DATE-TIME:20190625T150000Z
DTEND;VALUE=DATE-TIME:20190625T151500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442257@indico.cern.ch
DESCRIPTION:Speakers: Niccolo Cribiori (Vienna University of Technology)\n
An anti-D3-brane plays a crucial role in the construction of semi-realisti
c cosmological models in string theory. Part of its action provides an upl
ift term that has been used to lift AdS solutions to phenomenological viab
le dS vacua in the KKLT and LVS setups. This uplift breaks supersymmetry s
pontaneously and it can be described in the 4d N=1 supergravity language b
y using non-linear supersymmetry. I will present and discuss the necessary
ingredients to write down the complete 4d N=1 supergravity action for an
anti-D3-brane coupled to all closed string background fields.\n\nhttps://i
ndico.cern.ch/event/782251/contributions/3442257/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442257/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Transplanckian axion monodromy!?
DTSTART;VALUE=DATE-TIME:20190625T134500Z
DTEND;VALUE=DATE-TIME:20190625T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442253@indico.cern.ch
DESCRIPTION:Speakers: José Calderón Infante (Instituto de Física Teóri
ca (UAM/CSIC))\nWe show that warped throats of the Klebanov-Strassler kind
describe fully backreacted solutions of transplanckian axion monodromy. W
e show that the asymptotic Klebanov-Tseytlin solution features a 5d axion
physically rolling through its dependence on an spatial coordinate\, and t
raversing arbitrarily large geodesic distances in field space. We establis
h the description of the system in terms of an effective 5d theory for the
axion\, and verify its validity in transplanckian regimes.\n\nhttps://ind
ico.cern.ch/event/782251/contributions/3442253/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442253/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Moduli stabilisation and inflation in a Type IIB/F-theory framewor
k
DTSTART;VALUE=DATE-TIME:20190625T123000Z
DTEND;VALUE=DATE-TIME:20190625T124500Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3442248@indico.cern.ch
DESCRIPTION:Speakers: Georgios Leontaris (University of Ioannina (GR))\nTh
e problem of moduli stabilisation and inflation are discussed in type IIB/
F-theory. Considering a configuration of three intersecting D7 branes with
fluxes\, it is shown that higher loop effects induce logarithmic correcti
ons to the Kaehler potential which can stabilise the Kaehler moduli. When
a new Fayet-Iliopoulos term is included\, it is also possible to generate
the required number of e-foldings and satisfy the conditions for slow-roll
inflation.\n\nhttps://indico.cern.ch/event/782251/contributions/3442248/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3442248/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complexity and Random Matrix Approximations
DTSTART;VALUE=DATE-TIME:20190627T090000Z
DTEND;VALUE=DATE-TIME:20190627T093000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441919@indico.cern.ch
DESCRIPTION:Speakers: James Halverson ()\nEfforts to better understand the
landscape and swampland can be stifled by computational complexity. I wil
l discuss ways in which complexity could be overcome by learning random ma
trix approximations to string data\, including both opportunities and cave
ats. As a concrete example\, generative adversarial networks will be used
to learn random matrix approximations to certain Calabi-Yau data\, and phy
sical implications will be discussed.\n\nhttps://indico.cern.ch/event/7822
51/contributions/3441919/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441919/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Unified Flavor- and CP-Symmetries from String Theory
DTSTART;VALUE=DATE-TIME:20190628T153000Z
DTEND;VALUE=DATE-TIME:20190628T160000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441917@indico.cern.ch
DESCRIPTION:Speakers: Hans Peter Nilles (Univ. Bonn)\nWe develop a new met
hod to determine flavor symmetries within compactified string theory. A pi
cture emerges where traditional (discrete) flavor symmetries\, CP-like sym
metries and modular symmetries combine to a unified flavor group. We obser
ve the phenomenon of "local" flavor symmetries (with non-universality for
various sectors of the theory) that opens up a new arena for flavor model
building.\n\nhttps://indico.cern.ch/event/782251/contributions/3441917/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441917/
END:VEVENT
BEGIN:VEVENT
SUMMARY:String Phenomenology From a Worldsheet Perspective
DTSTART;VALUE=DATE-TIME:20190628T100000Z
DTEND;VALUE=DATE-TIME:20190628T103000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441915@indico.cern.ch
DESCRIPTION:Speakers: Alon Faraggi (University of Liverpool)\nI argue that
the ten dimensional non--supersymmetric tachyonic superstrings may serve
as good starting points for the construction of viable phenomenological va
cua. Thus\, enlarging the space of possible solutions that may address som
e of the outstanding problems in string phenomenology. A tachyon free six
generation Standard--like Model is presented\, which can be regarded as an
orbifold of the $SO(16)\\times E_8$ heterotic--string in ten dimensions.
I conjecture that any $(2\,0)$ heterotic--string in four dimensions can be
connected to a $(2\,2)$ one via an orbifold or by interpolations and prov
ide some evidence for this conjecture. It implies that any Effective Field
Theory (EFT) model that cannot be connected to a $(2\,2)$ theory is neces
sarily in the swampland\, and will simplifies the analysis of the moduli s
paces of $(2\,0)$. I argue that at present level of understanding of strin
g theory construction of vacua in which all the moduli are stable\, includ
ing the cosmological constant\, is futile. An example of a quasi-realistic
model in which all moduli are fixed\, aside from the dilaton is presented
.\n\nhttps://indico.cern.ch/event/782251/contributions/3441915/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441915/
END:VEVENT
BEGIN:VEVENT
SUMMARY:String axiverse and gamma-ray spectral modulation of galactic puls
ars
DTSTART;VALUE=DATE-TIME:20190628T130000Z
DTEND;VALUE=DATE-TIME:20190628T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441914@indico.cern.ch
DESCRIPTION:Speakers: Kiwoon Choi ()\nI discuss first the possible range o
f axion scales and couplings in string axiverse\, and then the possibility
to explain the recently noticed spectral modulation of gamma-rays from so
me galactic pulsars by the axion-photon-dark photon mixing realized in axi
verse scenario.\n\nhttps://indico.cern.ch/event/782251/contributions/34419
14/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441914/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Flavour as probe of New Physics
DTSTART;VALUE=DATE-TIME:20190628T123000Z
DTEND;VALUE=DATE-TIME:20190628T130000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441913@indico.cern.ch
DESCRIPTION:Speakers: Marco Nardecchia (CERN)\nhttps://indico.cern.ch/even
t/782251/contributions/3441913/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441913/
END:VEVENT
BEGIN:VEVENT
SUMMARY:F-theory and Dark Energy
DTSTART;VALUE=DATE-TIME:20190628T133000Z
DTEND;VALUE=DATE-TIME:20190628T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441912@indico.cern.ch
DESCRIPTION:Speakers: Jonathan Heckman ()\nhttps://indico.cern.ch/event/78
2251/contributions/3441912/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441912/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Landscape of F-theory Standard Models
DTSTART;VALUE=DATE-TIME:20190628T093000Z
DTEND;VALUE=DATE-TIME:20190628T100000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441910@indico.cern.ch
DESCRIPTION:Speakers: Mirjam Cvetic (University of Pennsylvania)\nWe prese
nt key steps in explicit construction of a globally consistent F-theory co
mpactifications with the exact chiral spectrum of the Standard Model with
gauge coupling\nunification. All global consistency conditions can be redu
ced to a single geometric criterion on the base of the underlying elliptic
ally fibered Calabi Yau fourfolds. For toric bases\, this criterion only d
epends on an associated polytope and is satisfied for at least O(10^15) di
stinct bases. Further particle physics implications of these models are ad
dressed.\n\nhttps://indico.cern.ch/event/782251/contributions/3441910/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441910/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higher Spin Theories\, AdS Distances and the Swampland
DTSTART;VALUE=DATE-TIME:20190628T143000Z
DTEND;VALUE=DATE-TIME:20190628T150000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441909@indico.cern.ch
DESCRIPTION:Speakers: Dieter Luest (Munich-University)\nIn this talk I dis
cuss various aspects of higher spin theories in the context of the swampla
nd.\n\nhttps://indico.cern.ch/event/782251/contributions/3441909/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441909/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anomalies in various dimensions
DTSTART;VALUE=DATE-TIME:20190628T080000Z
DTEND;VALUE=DATE-TIME:20190628T083000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441908@indico.cern.ch
DESCRIPTION:Speakers: Iñaki Garcia-Etxebarria ()\nAnomalies are a powerfu
l probe of the dynamics of field theories. In this talk I will discuss how
to connect different anomalies in various dimensions\, and describe some
applications of these ideas in string model building.\n\nhttps://indico.ce
rn.ch/event/782251/contributions/3441908/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441908/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A 3-form exploration of the landscape
DTSTART;VALUE=DATE-TIME:20190628T073000Z
DTEND;VALUE=DATE-TIME:20190628T080000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441907@indico.cern.ch
DESCRIPTION:Speakers: Luca Martucci (University of Padova)\nI will discuss
four-dimensional N=1 supergravity models including 3-form potentials and
membranes. These provide a general framework to describe the EFTs of strin
g/M-theory compactifications to four dimensions\, in which (part of) the i
nternal flux quanta arise as expectation values of the 4-form field-streng
ths and large portions of the landscape can be explored within a single EF
T. The application to concrete string models unveils some interesting univ
ersal patterns.\n\nhttps://indico.cern.ch/event/782251/contributions/34419
07/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441907/
END:VEVENT
BEGIN:VEVENT
SUMMARY:What’s new with G2?
DTSTART;VALUE=DATE-TIME:20190628T070000Z
DTEND;VALUE=DATE-TIME:20190628T073000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441906@indico.cern.ch
DESCRIPTION:Speakers: Sakura Schafer-Nameki ()\nhttps://indico.cern.ch/eve
nt/782251/contributions/3441906/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441906/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-supersymmetric D-branes
DTSTART;VALUE=DATE-TIME:20190625T100000Z
DTEND;VALUE=DATE-TIME:20190625T103000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441885@indico.cern.ch
DESCRIPTION:Speakers: Timm Michael Wrase (Vienna University of Technology)
\nI will argue that D-branes provide an interesting ingredient for constru
cting and understanding non-supersymmetric string theory compactifications
. D-branes break supersymmetry spontaneously. This can lead to setups with
non-linearly realized supersymmetry. This non-linear symmetry is still co
nstraining the action\, can be sufficient to derive renormalization theore
ms and therefore gives substantial control over the string compactificatio
n. I will correct a misconception in the literature about SUSY breaking in
tersecting D-branes. Then I discuss flux compactifications with non-supers
ymmetric D-branes that provide an interesting testing ground for the recen
t dS swampland conjecture.\n\nhttps://indico.cern.ch/event/782251/contribu
tions/3441885/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441885/
END:VEVENT
BEGIN:VEVENT
SUMMARY:String theory compactifications with sources
DTSTART;VALUE=DATE-TIME:20190627T073000Z
DTEND;VALUE=DATE-TIME:20190627T080000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441883@indico.cern.ch
DESCRIPTION:Speakers: Alessandro Tomasiello (University of Milano-Bicocca)
\nThere has been progress in recent years on how to include backreacted O-
planes in flux compactifications. After a quick review of such solutions i
n AdS\, I will discuss the current situation for de Sitter.\n\nhttps://ind
ico.cern.ch/event/782251/contributions/3441883/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441883/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Moduli Stars and False Vacuum Bubbles
DTSTART;VALUE=DATE-TIME:20190628T090000Z
DTEND;VALUE=DATE-TIME:20190628T093000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441882@indico.cern.ch
DESCRIPTION:Speakers: Fernando Quevedo (The Abdus Salam International Cent
re for Theoretical Physics)\nhttps://indico.cern.ch/event/782251/contribut
ions/3441882/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441882/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Generic matter and global gauge group structure in 6D and 4D super
gravity and F-theory models
DTSTART;VALUE=DATE-TIME:20190626T080000Z
DTEND;VALUE=DATE-TIME:20190626T083000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441871@indico.cern.ch
DESCRIPTION:Speakers: Washington Taylor ()\n6D supergravity and F-theory g
eometry provide compatible frameworks for a well-defined notion of generic
ity for matter representations. Generic matter types depend on global gau
ge group structure\, giving insight in particular into the distinction bet
ween theories with gauge group SU(3) x SU(2) x U(1) and those with SU(3) x
SU(2) x U(1)/Z_6.\n\nhttps://indico.cern.ch/event/782251/contributions/34
41871/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441871/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A discrete life in the swampland
DTSTART;VALUE=DATE-TIME:20190626T073000Z
DTEND;VALUE=DATE-TIME:20190626T080000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441870@indico.cern.ch
DESCRIPTION:Speakers: Angel Uranga (IFT\, Madrid)\nI will discuss instance
s in which discrete identifications in field space (discrete symmetries\,
dualities and monodromies) interplay with the swampland conjectures.\n\nht
tps://indico.cern.ch/event/782251/contributions/3441870/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441870/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Distance Conjecture and Potentials
DTSTART;VALUE=DATE-TIME:20190626T070000Z
DTEND;VALUE=DATE-TIME:20190626T073000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441869@indico.cern.ch
DESCRIPTION:Speakers: Eran Palti ()\nI will discuss relations between the
Swampland distance\nconjecture\, and its generalisations\, and potentials
in string theory.\n\nhttps://indico.cern.ch/event/782251/contributions/344
1869/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441869/
END:VEVENT
BEGIN:VEVENT
SUMMARY:de Sitter vacua in string theory: the landscape or the swampland?
DTSTART;VALUE=DATE-TIME:20190625T090000Z
DTEND;VALUE=DATE-TIME:20190625T093000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441858@indico.cern.ch
DESCRIPTION:Speakers: Mariana Grana (Unknown)\nWhile string theory was bel
ieved to have a landscape of de Sitter vacua\, the recent swampland conjec
tures postulate that metastable de Sitter vacua are in the swampland. In t
his talk I will focus on what seems to be the most solid and generic const
ruction of de Sitter vacua in string theory\, that of KKLT\, and show the
multiple reasons why it might be in the swampland.\n\nhttps://indico.cern.
ch/event/782251/contributions/3441858/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441858/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Swampland Update
DTSTART;VALUE=DATE-TIME:20190625T070000Z
DTEND;VALUE=DATE-TIME:20190625T073000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441853@indico.cern.ch
DESCRIPTION:Speakers: Cumrun Vafa (Harvard University)\nI present some rec
ent progress in formulating new swampland criteria.\n\nhttps://indico.cern
.ch/event/782251/contributions/3441853/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441853/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A new approach to heterotic moduli and dualities
DTSTART;VALUE=DATE-TIME:20190624T153000Z
DTEND;VALUE=DATE-TIME:20190624T160000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441852@indico.cern.ch
DESCRIPTION:Speakers: Lara Anderson ()\nIn this talk I will review the way
that the moduli of heterotic theories arise from a coupling of the geomet
ry of Calabi-Yau manifolds and holomorphic\, stable bundles over them. I w
ill demonstrate that the complete geometry (manifold + bundle) of a hetero
tic theory can be described via a higher dimensional\, toric complete inte
rsection manifold and explain how this formulation may shed new light on h
eterotic string dualities.\n\nhttps://indico.cern.ch/event/782251/contribu
tions/3441852/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441852/
END:VEVENT
BEGIN:VEVENT
SUMMARY:de Sitter Vacua from Ten Dimensions
DTSTART;VALUE=DATE-TIME:20190624T133000Z
DTEND;VALUE=DATE-TIME:20190624T140000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441844@indico.cern.ch
DESCRIPTION:Speakers: Liam McAllister ()\nI will critically analyze the de
Sitter construction of KKLT using ten-dimensional supergravity.\n\nhttps:
//indico.cern.ch/event/782251/contributions/3441844/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441844/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dark Energy in String Theory
DTSTART;VALUE=DATE-TIME:20190624T130000Z
DTEND;VALUE=DATE-TIME:20190624T133000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441843@indico.cern.ch
DESCRIPTION:Speakers: Susha Louise Parameswaran (University of Liverpool)\
nI will discuss recent attempts to describe dark energy\, including quinte
ssence\, using string theory.\n\nhttps://indico.cern.ch/event/782251/contr
ibutions/3441843/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441843/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chern-Simons and Heterotic Superpotentials
DTSTART;VALUE=DATE-TIME:20190624T100000Z
DTEND;VALUE=DATE-TIME:20190624T103000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441841@indico.cern.ch
DESCRIPTION:Speakers: James Gray (Virginia Tech)\nCompactifications of Het
erotic theories on Calabi-Yau manifolds have a Chern-Simons like contribut
ion to their four dimensional superpotential. In this talk I will discuss
some aspects of computations and general theory behind understanding this
often ignored contribution to the effective theory of such constructions.\
n\nhttps://indico.cern.ch/event/782251/contributions/3441841/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441841/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instantons and Infinite Distances
DTSTART;VALUE=DATE-TIME:20190624T090000Z
DTEND;VALUE=DATE-TIME:20190624T093000Z
DTSTAMP;VALUE=DATE-TIME:20190915T073404Z
UID:indico-contribution-782251-3441801@indico.cern.ch
DESCRIPTION:Speakers: Fernando Gabriel Marchesano Buznego (Consejo Superio
r de Investigaciones Cientificas (CSIC) (ES))\nhttps://indico.cern.ch/eve
nt/782251/contributions/3441801/
LOCATION:CERN 500/1-001 - Main Auditorium
URL:https://indico.cern.ch/event/782251/contributions/3441801/
END:VEVENT
END:VCALENDAR