Physics of the Early Universe

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Monday, June 13, 202210:10 AM OpeningOpening10:10 AM - 10:20 AM10:20 AM Starting the Universe from strong gravity regime - Valery Rubakov (Institute for Nuclear Research of RAS)Starting the Universe from strong gravity regime
- Valery Rubakov (Institute for Nuclear Research of RAS)

10:20 AM - 11:00 AM11:00 AM A de-Sitter no-hair theorem for spacetimes with isometry group forming two-dimensional orbits - Leonardo SenatoreA de-Sitter no-hair theorem for spacetimes with isometry group forming two-dimensional orbits- Leonardo Senatore

11:00 AM - 11:40 AM11:40 AM New boundary conditions for cosmology - Neil TurokNew boundary conditions for cosmology- Neil Turok

11:40 AM - 12:20 PM12:20 PM LunchLunch12:20 PM - 2:00 PM2:00 PM From Wormholes and Baby Universes to Inflation and the Measure Problem - Arthur HebeckerFrom Wormholes and Baby Universes to Inflation and the Measure Problem- Arthur Hebecker

2:00 PM - 2:40 PM2:40 PM Gravity and Axion - Gia DvaliGravity and Axion- Gia Dvali

2:40 PM - 3:20 PM3:20 PM Quantum gravity from the beginning to the present Universe - Christof WetterichQuantum gravity from the beginning to the present Universe- Christof Wetterich

3:20 PM - 4:00 PM4:00 PM Coffee breakCoffee break4:00 PM - 4:30 PM4:30 PM Gravitational wave production in non-local Starobinsky model - Anna TokarevaGravitational wave production in non-local Starobinsky model- Anna Tokareva

4:30 PM - 5:10 PM5:10 PM Path integrals in some 2D and 4D quadratic gravity models - Vladimir BelokurovPath integrals in some 2D and 4D quadratic gravity models- Vladimir Belokurov

5:10 PM - 5:50 PM -
Tuesday, June 14, 202210:20 AM Field redefinitions, perturbative unitarity, and Higgs inflation - Georgios KarananasField redefinitions, perturbative unitarity, and Higgs inflation
- Georgios Karananas

10:20 AM - 11:00 AM11:00 AM Higgs inflation as a door to gravity - Syksy RäsänenHiggs inflation as a door to gravity- Syksy Räsänen

11:00 AM - 11:40 AM11:40 AM Scale symmetry, the Higgs and the Nature of Gravity - Javier RubioScale symmetry, the Higgs and the Nature of Gravity- Javier Rubio

11:40 AM - 12:20 PM12:20 PM LunchLunch12:20 PM - 2:00 PM2:00 PM IR effects in de Sitter and in Inflation - Victor GorbenkoIR effects in de Sitter and in Inflation- Victor Gorbenko

2:00 PM - 2:40 PM2:40 PM Bootstrapping large graviton non-Gaussianities - Enrico PajerBootstrapping large graviton non-Gaussianities- Enrico Pajer

2:40 PM - 3:20 PMGravitational interferometers and cosmological observations of the cosmic microwave background offer us the prospect to probe the laws of gravity in the primordial universe. To study and interpret these datasets we need to know the possible graviton non-Gaussianities. To this end, we derive the most general tree-level three-point functions (bispectra) for a massless graviton to all orders in derivatives, assuming scale invariance. Instead of working with explicit Lagrangians, we take a bootstrap approach and obtain our results using the recently derived constraints from unitarity, locality and the choice of vacuum. Since we make no assumptions about de Sitter boosts, our results capture the phenomenology of large classes of models such as the effective field theory of inflation and solid inflation. We present formulae for the infinite number of parity-even bispectra. Remarkably, for parity-odd bispectra, we show that unitarity allows for only a handful of possible shapes: three for graviton-graviton-graviton, three for scalar-graviton-graviton and one for scalar-scalar-graviton, which we bootstrap explicitly. These parity-odd non-Gaussianities can be large, for example in solid inflation, and therefore constitute a concrete and well-motivated target for future observations.3:20 PM Fundamental Physics from Galaxy Surveys - Mikhail IvanovFundamental Physics from Galaxy Surveys- Mikhail Ivanov

3:20 PM - 4:00 PMThe distribution of galaxies on large scales is a sensitive probe of cosmological physics. In particular, the structure of this distribution depends on properties of dark matter and the dynamics of the early universe. Understanding this dependence, however, is a challenging task because the observed galaxy distribution is modulated by a variety of non-linear effects. I will present theoretical tools that have allowed for a systematic analytic description of these effects. These tools play a central role in a new program of extracting cosmological information from galaxy surveys. I will share some results of this program from my independent analysis of the public data from the Baryon acoustic Oscillation Spectroscopic Survey. These results include the measurement of the Hubble constant as well as constraints on new physics and the early Universe.4:00 PM Coffee breakCoffee break4:00 PM - 4:30 PM4:30 PM Generation of peaks in primordial perturbation spectra due to variable number of slow-roll inflatons - Alexei StarobinskyGeneration of peaks in primordial perturbation spectra due to variable number of slow-roll inflatons- Alexei Starobinsky

4:30 PM - 5:10 PM5:10 PM Cosmological attractors after Planck/BICEP/Keck - Andrei LindeCosmological attractors after Planck/BICEP/Keck- Andrei Linde

5:10 PM - 5:50 PM -
Wednesday, June 15, 202210:20 AM Aspects of High Scale Leptogenesis with Low Energy CP Violation - Serguey PetcovAspects of High Scale Leptogenesis with Low Energy CP Violation
- Serguey Petcov

10:20 AM - 11:00 AM11:00 AM Resonant Leptogenesis - Björn GarbrechtResonant Leptogenesis- Björn Garbrecht

11:00 AM - 11:40 AM11:40 AM Testable scenarios of leptogenesis - Marco DrewesTestable scenarios of leptogenesis- Marco Drewes

11:40 AM - 12:20 PM12:20 PM LunchLunch12:20 PM - 2:00 PM2:00 PM 2PI-approach to particle production and phase transition dynamics - Kimmo Kainulainen2PI-approach to particle production and phase transition dynamics- Kimmo Kainulainen

2:00 PM - 2:40 PM2:40 PM CosmoLattice: The Art of Simulating the Early Universe - Daniel FigueroaCosmoLattice: The Art of Simulating the Early Universe- Daniel Figueroa

2:40 PM - 3:20 PM3:20 PM Lattice simulations of inflation and reheating - Kaloian LozanovLattice simulations of inflation and reheating- Kaloian Lozanov

3:20 PM - 4:00 PM4:00 PM Coffee breakCoffee break4:00 PM - 4:30 PM4:30 PM Gravitation portals and particle production during inflationary reheating - Keith OliveGravitation portals and particle production during inflationary reheating- Keith Olive

4:30 PM - 5:10 PM5:10 PM Small-scale structure in vector dark matter - Mustafa AminSmall-scale structure in vector dark matter- Mustafa Amin

5:10 PM - 5:50 PM5:50 PM Vacuum Energy of the Universe, Large scale magnetic field and nontrivial topology in Quantum Field Theory - Ariel ZhitnitskyVacuum Energy of the Universe, Large scale magnetic field and nontrivial topology in Quantum Field Theory- Ariel Zhitnitsky

5:50 PM - 6:30 PM -
Thursday, June 16, 202210:20 AM Lorentzian Description of the 1st Order Phase Transition - Kohei KamadaLorentzian Description of the 1st Order Phase Transition
- Kohei Kamada

10:20 AM - 11:00 AM11:00 AM Primordial Black Holes and Vacuum Decay - Ruth GregoryPrimordial Black Holes and Vacuum Decay- Ruth Gregory

11:00 AM - 11:40 AM11:40 AM Cosmological implications of Higgs vacuum metastability - Arttu RajantieCosmological implications of Higgs vacuum metastability- Arttu Rajantie

11:40 AM - 12:20 PM12:20 PM LunchLunch12:20 PM - 2:00 PM2:00 PM A novel technique for the description of gauge-field production during axion inflation - Oleksandr SobolA novel technique for the description of gauge-field production during axion inflation- Oleksandr Sobol

2:00 PM - 2:40 PM2:40 PM Electroweak model in a strong magnetic field - Maxim ChernodubElectroweak model in a strong magnetic field- Maxim Chernodub

2:40 PM - 3:20 PM3:20 PM Cosmological stochastic gravitational wave backgrounds in LISA - Chiara CapriniCosmological stochastic gravitational wave backgrounds in LISA- Chiara Caprini

3:20 PM - 4:00 PM4:00 PM Coffee breakCoffee break4:00 PM - 4:30 PM4:30 PM Probing the scale of grand unification with gravitational waves - Valerie DomckeProbing the scale of grand unification with gravitational waves- Valerie Domcke

4:30 PM - 5:10 PM5:10 PM Cosmic strings and black holes - Alexander VilenkinCosmic strings and black holes- Alexander Vilenkin

5:10 PM - 5:50 PM -
Friday, June 17, 202210:20 AM The nature of Dark Matter: what can we learn from astrophysical data expected in the next few years - Alexey BoyarskyThe nature of Dark Matter: what can we learn from astrophysical data expected in the next few years
- Alexey Boyarsky

10:20 AM - 11:00 AM11:00 AM Dark Matter abundance via thermal decays and leptoquark mediators - Alessandro StrumiaDark Matter abundance via thermal decays and leptoquark mediators- Alessandro Strumia

11:00 AM - 11:40 AM11:40 AM Primordial black holes and their observational constraints - Kazunori KohriPrimordial black holes and their observational constraints- Kazunori Kohri

11:40 AM - 12:20 PM12:20 PM LunchLunch12:20 PM - 2:00 PM2:00 PM Big Bang nucleosynthesis -- new about old - Oleg RuchayskiyBig Bang nucleosynthesis -- new about old- Oleg Ruchayskiy

2:00 PM - 2:40 PM2:40 PM The problem of instability of gravitational baryogenesis and its possible resolution - Elena ArbuzovaThe problem of instability of gravitational baryogenesis and its possible resolution- Elena Arbuzova

2:40 PM - 3:20 PM3:20 PM Primordial black holes as dark matter from inflation - Guillermo BallesterosPrimordial black holes as dark matter from inflation- Guillermo Ballesteros

3:20 PM - 4:00 PM4:00 PM Coffee breakCoffee break4:00 PM - 4:30 PM4:30 PM Primordial black holes in the universe and antistars in Milky Way - Alexander DolgovPrimordial black holes in the universe and antistars in Milky Way- Alexander Dolgov

4:30 PM - 5:10 PM5:10 PM Primordial black holes as dark matter - Alexander KusenkoPrimordial black holes as dark matter- Alexander Kusenko

5:10 PM - 5:50 PM

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