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BEGIN:VEVENT
SUMMARY:2d (0\,2) Brane Brick gauge theories
DTSTART;VALUE=DATE-TIME:20170710T130000Z
DTEND;VALUE=DATE-TIME:20170710T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644058@indico.cern.ch
DESCRIPTION:Speakers: Sangmin Lee (Seoul National University)\nBrane Brick
models are 2d (0\,2) gauge theories on the world-volume of D1-branes prob
ing toric Calabi-Yau (CY) 4-fold singularities. Given a toric diagram\, we
can construct the gauge theory by orbifolding\, partial resolution\, or o
ther means. For abelian theories\, we can verify that the classical moduli
space coincides with the CY geometry\, most efficiently by using a combin
atorial tool called brick matching. The map between gauge theory and geome
try is in general many to one. In some concrete examples\, we show that th
e gauge theories corresponding to the same geometry are related to each ot
her via Gadde-Gukov-Putrov triality. One way to understand the triality is
to study the mirror dual of the toric CY singularity. Mirror symmetry lea
ds to a geometric unification of dualities in different dimensions\, where
the order of duality is (n-1) for a CY n-fold. At the quantum level\, we
expect that the abelian theory will flow to a sigma model on the CY singul
arity with the left-moving fermions transforming in the 6 representation o
f the SU(4) holonomy group of the tangent bundle. We confirm this expectat
ion by computing the elliptic genus of the gauge theory.\nhttps://indico.c
ern.ch/event/611006/contributions/2644058/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644058/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stable quotients and holomorphic anomaly equation
DTSTART;VALUE=DATE-TIME:20170714T130000Z
DTEND;VALUE=DATE-TIME:20170714T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644587@indico.cern.ch
DESCRIPTION:Speakers: Hyenho Lho (ETH Zurich)\nI will prove the holomorphi
c anomaly equation for stable quotient invariant of local P2. This equatio
n is in the precise form predicted by B-model physics. If I have more time
\, I will also explain about the holomorphic anomaly equation for [C3/Z3]
and formal quintic invariants. This talk is based on joint work with Rahul
Pandharipande.\nhttps://indico.cern.ch/event/611006/contributions/2644587
/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644587/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d N=2 dualities with monopole superpotentials
DTSTART;VALUE=DATE-TIME:20170714T080000Z
DTEND;VALUE=DATE-TIME:20170714T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644581@indico.cern.ch
DESCRIPTION:Speakers: Sara Pasquetti (University of Milan-Bicocca)\nIn thi
s talk I will discuss 3d gauge theories with monopole operator entering th
e superpotential. Starting with the theory without monopole potential\, if
the monopole potential is relevant there is an RG flow to the monopole-de
formed theory. Here\, focusing on U(Nc) SQCD with Nf flavors and N=2 super
symmetry\, I will argue that even when the monopole potential is irrelevan
t\, the monopole-deformed theory can exist and admit an Aharony-like du
al description. I will present various checks and generalizations of this
duality.\nhttps://indico.cern.ch/event/611006/contributions/2644581/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644581/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Squashed toric sigma models and mock modular forms
DTSTART;VALUE=DATE-TIME:20170717T080000Z
DTEND;VALUE=DATE-TIME:20170717T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644638@indico.cern.ch
DESCRIPTION:Speakers: Sameer Murthy (King's College London)\nIn the late 8
0s and early 90s a three-way link was established between N=(2\,2) SCFTs\,
compact Calabi Yau (CY) manifolds\, and modular/Jacobi forms. These links
can be understood through the corresponding Gauged Linear Sigma Models an
d calculations of their elliptic genera. I will discuss how there are inte
resting modifications to these links when the spectrum involves a continuu
m. The corresponding players in the new relations are non-compact N=(2\,2)
SCFTs\, squashed toric manifolds\, and mock modular/mock Jacobi forms.\nh
ttps://indico.cern.ch/event/611006/contributions/2644638/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644638/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gauged Linear Sigma Models\, Calabi-Yaus and Hemisphere Partition
Function
DTSTART;VALUE=DATE-TIME:20170720T080000Z
DTEND;VALUE=DATE-TIME:20170720T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644721@indico.cern.ch
DESCRIPTION:Speakers: Johanna Knapp (TU Wien)\nThe gauged linear sigma mod
el (GLSM) is a supersymmetric gauge theory in two dimensions which capture
s information about Calabi-Yaus and their moduli spaces. Recent results in
supersymmetric localization provide new tools for computing quantum corre
ctions in string compactifications. \nThis talk will focus in particular o
n the hemisphere partition function of the GLSM which computes the quantum
corrected central charge of B-type D-branes. Several concrete examples of
GLSMs and applications of the hemisphere partition function in the contex
t of transporting D-branes in the Kahler moduli space will be given.\nhttp
s://indico.cern.ch/event/611006/contributions/2644721/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644721/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dimensional reduction and dualities in two dimensions
DTSTART;VALUE=DATE-TIME:20170719T080000Z
DTEND;VALUE=DATE-TIME:20170719T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644719@indico.cern.ch
DESCRIPTION:Speakers: Brian Willett (Kavli Institute for Theoretical Physi
cs\, UC Santa Barbara )\nWe discuss the reduction of supersymmetric theori
es to two dimensions\, and new features that arise here\, including non-tr
ivial target space metrics and the appearance of direct sums of decoupled
theories. We describe how these features affect the reduction of supersym
metric dualities\, and point out new subtleties that arise in two dimensio
nal infrared dualities. In the process\, we recover many known dualities\
, and find some new ones.\nhttps://indico.cern.ch/event/611006/contributio
ns/2644719/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644719/
END:VEVENT
BEGIN:VEVENT
SUMMARY:All-Order Volume Conjecture for Closed 3-Manifolds from Complex Ch
ern-Simons Theory
DTSTART;VALUE=DATE-TIME:20170718T080000Z
DTEND;VALUE=DATE-TIME:20170718T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644712@indico.cern.ch
DESCRIPTION:Speakers: Mauricio Romo (IAS)\nAbstract: I'll review some gene
ral aspects of complex Chern-Simons theory on hyperbolic 3-manifolds\, foc
using on the case of gauge group G=SL(2\,C). After a brief introduction to
the Volume Conjecture (VC)\, for knot complements and\, a very recent mat
hematical proposal\, for closed hyperbolic 3-manifolds\, I'll show how com
plex Chern-Simons theory is related with them and how this connection lead
s to a novel generalization of the most recently proposed VC for closed 3-
manifolds.\nhttps://indico.cern.ch/event/611006/contributions/2644712/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644712/
END:VEVENT
BEGIN:VEVENT
SUMMARY:RG Flows Across Dimensions and Holography
DTSTART;VALUE=DATE-TIME:20170720T140000Z
DTEND;VALUE=DATE-TIME:20170720T150000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644728@indico.cern.ch
DESCRIPTION:Speakers: Nikolay Bobev (KU Leuven)\nAbstract: Superconformal
field theories placed in nontrivial background fields for the metric and t
he continuous global symmetries exhibit a rich web of RG flows across dime
nsions. I will discuss several examples of such flows and emphasize some o
f their universal features. In addition\, I will employ non-perturbative t
ools such as 't Hooft anomaly matching\, a-\, F-\, and c-extremization\, a
nd holography to gain a quantitative understanding of some aspects of thes
e theories. Finally\, I will discuss the relevance of these results for a
microscopic understanding of the entropy of supersymmetric black holes and
strings in AdS.\nhttps://indico.cern.ch/event/611006/contributions/264472
8/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644728/
END:VEVENT
BEGIN:VEVENT
SUMMARY:F-theory and AdS_3/CFT_2
DTSTART;VALUE=DATE-TIME:20170721T130000Z
DTEND;VALUE=DATE-TIME:20170721T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644731@indico.cern.ch
DESCRIPTION:Speakers: Dario Martelli (King's College London)\nI will discu
ss supersymmetric AdS_3 solutions in F-theory\, that is Type IIB supergrav
ity with varying axio-dilaton\, which are holographically dual to 2d N=(0\
,4) superconformal field theories with small superconformal algebra. The a
im of this work is to set up holography in the context of F-theory\, which
are traditionally two distinct areas of string theory. The talk will be b
ased on the arXiv paper 1705.04679.\nhttps://indico.cern.ch/event/611006/c
ontributions/2644731/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644731/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Multiple Fibrations\, CICYs and Dualities
DTSTART;VALUE=DATE-TIME:20170720T130000Z
DTEND;VALUE=DATE-TIME:20170720T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644724@indico.cern.ch
DESCRIPTION:Speakers: James Gray (Virgina Tech)\nIt is an often noted fact
that the vast majority of known Calabi-Yau geometries admit a genus one f
ibration. I will investigate this in the context of Calabi-Yau described a
s complete intersections in products of projective spaces\, as well as ext
ensions of that construction. The vast majority of these manifolds admit a
large number of different fibrations. We will use this structure to descr
ibe links and dualities between theories obtained via different F-theory c
ompactifications.\nhttps://indico.cern.ch/event/611006/contributions/26447
24/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644724/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Three Remarks On d=4 N=2 Field Theories
DTSTART;VALUE=DATE-TIME:20170710T080000Z
DTEND;VALUE=DATE-TIME:20170710T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644052@indico.cern.ch
DESCRIPTION:Speakers: Gregory Moore (Rutgers University)\nRemarks 1 and 2
focus on half-BPS line defects in four-dimensional field theories with N=2
supersymmetry. Remark 1 concerns a minor\, but intriguing\, gap in the c
lassification of line defects in Lagrangian theories of class S. Remark 2
concerns computations of ``VEV's'' of line defects on R3 x S1. Remark 3 di
scusses some hypothetical new N=2 d=4 superconformal theories.\nhttps://in
dico.cern.ch/event/611006/contributions/2644052/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644052/
END:VEVENT
BEGIN:VEVENT
SUMMARY:N=1 "Lagrangians" for N=2 "non-Lagrangian" theories
DTSTART;VALUE=DATE-TIME:20170712T080000Z
DTEND;VALUE=DATE-TIME:20170712T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644354@indico.cern.ch
DESCRIPTION:Speakers: Jaewon Song (Korea Institute for Advanced Study)\nAr
gyres-Douglas (AD) theory is an N=2 superconformal field theory (SCFT) whi
ch has no weak-coupling limit. Nevertheless\, AD theory is believed to be
the simplest interacting N=2 SCFT. In this talk\, I will present N=1 gauge
theories that flow to the AD theory and its generalizations in the IR. Th
is high-energy description of the AD theory makes it possible to compute s
upersymmetric partition functions. This gauge theory is obtained from cert
ain N=1 preserving deformation of an N=2 SCFT. I will discuss special case
s where N=1 deformation of the N=2 theory leads to an enhanced N=2 supersy
mmetry in the IR.\nhttps://indico.cern.ch/event/611006/contributions/26443
54/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644354/
END:VEVENT
BEGIN:VEVENT
SUMMARY:d=4 N=2 Field Theory And Physical Mathematics
DTSTART;VALUE=DATE-TIME:20170712T120000Z
DTEND;VALUE=DATE-TIME:20170712T130000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644355@indico.cern.ch
DESCRIPTION:Speakers: Gregory Moore (Rutgers University)\n[Colloquium.] I
will explain the meaning of the two phrases in the title. Much of the talk
will be a review of the renowned Seiberg-Witten formulation of the low-en
ergy physics of certain four dimensional supersymmetric interacting quantu
m field theories. In the latter part of the talk I will briefly describe s
ome of the significant progress that has been made in solving for the so-c
alled BPS sector of the Hilbert space of these theories. Investigations in
to these physical questions have had a nontrivial impact on mathematics.\n
https://indico.cern.ch/event/611006/contributions/2644355/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644355/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anyons and 3d dualities
DTSTART;VALUE=DATE-TIME:20170711T130000Z
DTEND;VALUE=DATE-TIME:20170711T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644342@indico.cern.ch
DESCRIPTION:Speakers: Nima Doroud (Sissa)\nRecent studies of Chern-Simons-
Matter (CSM) theories have unveiled an infinite web of dualities among the
se theories. While consistency within the web provides strong evidence for
the dualities over a range of parameters\, few explicit checks go beyond
the strict infinite N limit. In this talk I will briefly review this web o
f dualities and some of the tests it has been subjected to. I will then ad
vocate the study of CSM theories in the non-relativistic regime where they
describe (strongly) interacting anyons in a trap. In this regime some obs
ervables can be evaluated exactly providing further evidence for the afore
mentioned dualities.\nhttps://indico.cern.ch/event/611006/contributions/26
44342/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644342/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Genus zero log BPS numbers for del Pezzo surfaces
DTSTART;VALUE=DATE-TIME:20170713T130000Z
DTEND;VALUE=DATE-TIME:20170713T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644514@indico.cern.ch
DESCRIPTION:Speakers: Jinwon Choi (Sookmyung Women's University)\nWe study
the enumerative relationship between local and log Calabi-Yau geometries
for del Pezzo surfaces. Genus zero log BPS numbers for del Pezzo surfaces
are defined from the log Calabi-Yau geometry of the surface with a smooth
anticanonical divisor. We propose their conjectural relationship to the ge
nus zero local BPS state counts. This talk is based on joint work with Mic
hel van Garrel\, Sheldon Katz and Nobuyoshi Takahashi.\nhttps://indico.cer
n.ch/event/611006/contributions/2644514/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644514/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cardy Formula for SUSY Theories and Localization
DTSTART;VALUE=DATE-TIME:20170711T140000Z
DTEND;VALUE=DATE-TIME:20170711T150000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644352@indico.cern.ch
DESCRIPTION:Speakers: Lorenzo Di Pietro (Perimeter Institute)\nI will cons
ider 4d N=1 supersymmetric theories on a compact Euclidean manifold of the
form S1×S3. Taking the limit of shrinking S1\, I will present a formula
for the limit of the localization integrand\, derived by simple effective
theory considerations. The limit is given in terms of an effective potenti
al for the holonomies around the S1\, whose minima determine the asymptoti
c behavior of the partition function. If the potential is minimized in the
origin\, where it vanishes\, the partition function has a Cardy-like beha
vior fixed by Tr(R)\, while a nontrivial minimum gives a shift in the coef
ficient. I will also discuss the generalization to 6d N=(1\,0) indices and
an application to Schur indices.\nhttps://indico.cern.ch/event/611006/con
tributions/2644352/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644352/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Modular Constraints on Conformal Field Theories with Currents
DTSTART;VALUE=DATE-TIME:20170718T140000Z
DTEND;VALUE=DATE-TIME:20170718T150000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644716@indico.cern.ch
DESCRIPTION:Speakers: Jin-Beom Bae (Korea Institute for Advanced Study)\nU
sing the modular bootstrap\, we study the constraints on the spectrum of c
>1 unitary two-dimensional conformal field theories with holomorphic curre
nts. Imposing a gap in the twist\, we obtain the numerical upper bound on
conformal dimension of the lowest primary states. We find that diverse rat
ional conformal field theories are realized on the numerical boundary\, in
cluding the level-1 Wess-Zumino-Witten models for Deligne's exceptional Li
e algebras and cousins of the extremal conformal field theories. Their low
-lying spectrum and corresponding degeneracies are numerically analyzed\,
this enable us to confirm the structure of modular invariant partition fun
ction via Virasoro character decomposition. We also extend this analysis t
o the rank-k W-algebra case\, the numerical test suggest that the unitary
irreducible representations are allowed only for c>=k.\nhttps://indico.cer
n.ch/event/611006/contributions/2644716/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644716/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The infrared physics of bad theories
DTSTART;VALUE=DATE-TIME:20170717T130000Z
DTEND;VALUE=DATE-TIME:20170717T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644639@indico.cern.ch
DESCRIPTION:Speakers: Stefano Cremonesi (Durham University)\nThree-dimensi
onal gauge theories with eight supercharges (3d N=4) have a rich moduli sp
ace of supersymmetric vacua with different low energy physics. This infrar
ed physics is well understood for theories with large enough number of fla
vours ("good theories")\, but less so if the number of flavours is small (
"bad theories"). In this talk I will focus on 3d N=4 super-QCD theories wi
th U(N) gauge group and N_f flavours of fundamental hypermultiplets. After
reviewing known results and puzzles about such theories\, I will discuss
their quantum corrected moduli space of vacua\, which consists of Higgs\,
Coulomb and mixed branches\, and their low energy physics as N and N_f are
varied. As a by-product\, I will clarify if and in which sense bad U(N) g
auge theories with N_f >= N flavours flow to their "Seiberg dual" good U(N
_f-N) theories with N_f flavours (plus free fields) at low energies\, as i
s suggested by localization results.\nhttps://indico.cern.ch/event/611006/
contributions/2644639/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644639/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Refined BPS invariants of 6d SCFTs from anomalies and modularity
DTSTART;VALUE=DATE-TIME:20170711T080000Z
DTEND;VALUE=DATE-TIME:20170711T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644339@indico.cern.ch
DESCRIPTION:Speakers: Amir-Kian Kashani-Poor\nThe last few years have witn
essed a renewed interest in six dimensional quantum theories\, some 20 yea
rs after the existence of non-trivial conformal fixed points for such theo
ries was first argued for. 6d theories generically contain strings in thei
r spectrum and require novel field theoretic tools for their description.
In this talk\, we will discuss how the spectrum arising from quantization
of the 6d string is captured by the topological string. We will argue that
knowledge of the anomaly polynomial implies the holomorphic anomaly equat
ion governing the topological string\, and use the latter in conjunction w
ith modularity properties to solve for the partition function exactly orde
r by order in the number of strings.\nhttps://indico.cern.ch/event/611006/
contributions/2644339/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644339/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dualities and exact results in 3d supersymmetric gauge theories
DTSTART;VALUE=DATE-TIME:20170719T120000Z
DTEND;VALUE=DATE-TIME:20170719T130000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644720@indico.cern.ch
DESCRIPTION:Speakers: Sara Pasquetti (University of Milan-Bicocca)\n[Collo
quium.] Dualities give us new perspectives on the dynamics of supersymmetr
ic gauge theories and are valuable tools to explore the strongly coupled p
hases. We know different types of dualities such as holographic\, UV and I
R dualities and various examples of correspondences relating supersymmetri
c gauge theories to lower-dimensional theories such as 2d CFTs. Over the l
ast 10 years the application of the localization technique to supersymmetr
ic theories defined on compact spaces in various dimensions has allowed us
to calculate exactly partition functions and correlators and to perform n
on-trivial tests of previously conjectured dualities and to discover new o
nes. I will review various types of IR dualities for 3d supersymmetric the
ories and discuss the strategies to test them. I will then propose a new
family of IR dualities involving theories with monopole operators deformat
ions entering the superpotential. I will argue that monopole deformed theo
ries can exits even if the monopole deformation is irrelevant at the IR fi
xed point of the undeformed theory.\nhttps://indico.cern.ch/event/611006/c
ontributions/2644720/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644720/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Borel resummation and perturbative series in supersymmetric gauge
theories
DTSTART;VALUE=DATE-TIME:20170721T080000Z
DTEND;VALUE=DATE-TIME:20170721T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644730@indico.cern.ch
DESCRIPTION:Speakers: Masazumi Honda (Weizmann Institute of Science)\nPert
urbative series in quantum field theory is typically divergent.\nThere is
a standard way to resum divergent series called Borel resummation. While p
erturbative series in typical field theory is expected to be non-Borel sum
mable\, it is natural to ask when perturbative series is Borel summable an
d if it is non-Borel summable\, what is a correct way to resum the perturb
ative series. In my talk I will first discuss that we can show Borel summa
bility of perturbative series in 4d N=2 and 5d N=1 supersymmetric gauge th
eories with Lagrangians for various observables. It turns out that exact r
esults in these theories can be obtained by summing over the Borel resumma
tions with every instanton number. I also discuss perturbative series in g
eneral 3d N=2 supersymmetric Chern-Simons matter theory\, which is given b
y a power series expansion of inverse Chern-Simons levels. We prove that t
he perturbative series are always Borel summable along imaginary axis. It
turns out that the Borel resummations along this direction are the same as
exact results. I will also give physical interpretations of singularities
in Borel plane for this class of theories. [PRL116\,no.21\,211601(2016)\,
PRD94\, no.2\, 025039 (2016) and upcoming paper(s)]\nhttps://indico.cern.
ch/event/611006/contributions/2644730/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644730/
END:VEVENT
BEGIN:VEVENT
SUMMARY:D-brane masses and the motivic Hodge conjecture
DTSTART;VALUE=DATE-TIME:20170713T080000Z
DTEND;VALUE=DATE-TIME:20170713T090000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644359@indico.cern.ch
DESCRIPTION:Speakers: Albrecht Klemm (Institut fuer Theoretische Physik)\n
We calculate the masses of the D2 and and D4 brane at the conifold of one
parameter Calabi-Yau spaces\, using the motivic Hodge conjecture. This giv
es evidence for the latter in a new context.\nhttps://indico.cern.ch/event
/611006/contributions/2644359/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644359/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Two Gauged Linear Sigma Models for non-spherical Calabi-Yau manifo
lds
DTSTART;VALUE=DATE-TIME:20170713T140000Z
DTEND;VALUE=DATE-TIME:20170713T150000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644523@indico.cern.ch
DESCRIPTION:Speakers: Sergey Galkin (National Research University Higher S
chool of Economics)\nI will describe two GLSMs with gauge group U(2)\, tha
t help to understand geometry of a hyper-kähler 4-fold and of an abelian
surface (varieties of lines on del Pezzo manifolds). By RG flow one can re
late sigma-models on these CYs to "symmetric squares" of smaller theories\
, despite the fact that for very general cubic fourfold its variety of lin
es is not birational to a Hilbert scheme of a K3 surface.\nhttps://indico.
cern.ch/event/611006/contributions/2644523/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644523/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetric partition function and higher dimensional A-twist
DTSTART;VALUE=DATE-TIME:20170718T130000Z
DTEND;VALUE=DATE-TIME:20170718T140000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644714@indico.cern.ch
DESCRIPTION:Speakers: Heeyeon Kim (Perimeter Institute)\nI will talk about
three-dimensional N=2 supersymmetric gauge theories on M_{g\,p}\, a circl
e bundle of degree p over a genus g Riemann surface. We compute the supers
ymmetric partition functions on M_{g\,p} and correlation functions of BPS
loop operators. We also consider four-dimensional uplift of this construct
ion\, which computes the generalized index of N=1 gauge theories defined o
n elliptic fibration over genus g Riemann surface. We find that the partit
ion function or index can be written as a sum over "Bethe vacua” of two-
dimensional A-twisted theory obtained by compactification. With this frame
work\, we will see how the partition functions on manifolds with different
topologies are related to each other. It also provides a novel tool to st
udy various supersymmetric dualities\, which allows us to study the action
of the dualities on the co-dimension two BPS operators.\nhttps://indico.c
ern.ch/event/611006/contributions/2644714/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644714/
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BEGIN:VEVENT
SUMMARY:Witten index for noncompact dynamics
DTSTART;VALUE=DATE-TIME:20170717T140000Z
DTEND;VALUE=DATE-TIME:20170717T150000Z
DTSTAMP;VALUE=DATE-TIME:20210614T072000Z
UID:indico-contribution-2644709@indico.cern.ch
DESCRIPTION:Speakers: Seung Joo Lee (Virginia Tech)\nMany of the gauged dy
namics motivated by string theory come with gapless asymptotic directions.
In this talk\, we focus on d=1 GLSM's of such kind and their Witten indic
es\, having in mind of the associated D-brane bound state problems. Upon i
llustrating by examples that twisted partition functions can be misleading
\, we proceed to explore how physical Witten indices can sometimes be embe
dded therein. There arise further subtleties when gapless continuum sector
s come from a gauge multiplet\, as in pure Yang-Mills or non-primitive qui
ver theories. For such theories\, the twisted partition functions tend to
involve fractional expressions. We point out that these are tied to the no
tion of rational invariant in the wall-crossing formulae\, offering a gene
ral mechanism of extracting the Witten index directly from the twisted par
tition function.\nhttps://indico.cern.ch/event/611006/contributions/264470
9/
LOCATION:4/3-006 - TH Conference Room (CERN)
URL:https://indico.cern.ch/event/611006/contributions/2644709/
END:VEVENT
END:VCALENDAR