Physics of the Early Universe
from
Monday, 13 June 2022 (09:00)
to
Friday, 17 June 2022 (18:00)
Monday, 13 June 2022
10:10
Opening
Opening
10:10 - 10:20
10:20
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 - 11:00
11:00
A de-Sitter no-hair theorem for spacetimes with isometry group forming two-dimensional orbits
-
Leonardo Senatore
A de-Sitter no-hair theorem for spacetimes with isometry group forming two-dimensional orbits
Leonardo Senatore
11:00 - 11:40
11:40
New boundary conditions for cosmology
-
Neil Turok
New boundary conditions for cosmology
Neil Turok
11:40 - 12:20
12:20
Lunch
Lunch
12:20 - 14:00
14:00
From Wormholes and Baby Universes to Inflation and the Measure Problem
-
Arthur Hebecker
From Wormholes and Baby Universes to Inflation and the Measure Problem
Arthur Hebecker
14:00 - 14:40
14:40
Gravity and Axion
-
Gia Dvali
Gravity and Axion
Gia Dvali
14:40 - 15:20
15:20
Quantum gravity from the beginning to the present Universe
-
Christof Wetterich
Quantum gravity from the beginning to the present Universe
Christof Wetterich
15:20 - 16:00
16:00
Coffee break
Coffee break
16:00 - 16:30
16:30
Gravitational wave production in non-local Starobinsky model
-
Anna Tokareva
Gravitational wave production in non-local Starobinsky model
Anna Tokareva
16:30 - 17:10
17:10
Path integrals in some 2D and 4D quadratic gravity models
-
Vladimir Belokurov
Path integrals in some 2D and 4D quadratic gravity models
Vladimir Belokurov
17:10 - 17:50
Tuesday, 14 June 2022
10:20
Field redefinitions, perturbative unitarity, and Higgs inflation
-
Georgios Karananas
Field redefinitions, perturbative unitarity, and Higgs inflation
Georgios Karananas
10:20 - 11:00
11:00
Higgs inflation as a door to gravity
-
Syksy Räsänen
Higgs inflation as a door to gravity
Syksy Räsänen
11:00 - 11:40
11:40
Scale symmetry, the Higgs and the Nature of Gravity
-
Javier Rubio
Scale symmetry, the Higgs and the Nature of Gravity
Javier Rubio
11:40 - 12:20
12:20
Lunch
Lunch
12:20 - 14:00
14:00
IR effects in de Sitter and in Inflation
-
Victor Gorbenko
IR effects in de Sitter and in Inflation
Victor Gorbenko
14:00 - 14:40
14:40
Bootstrapping large graviton non-Gaussianities
-
Enrico Pajer
Bootstrapping large graviton non-Gaussianities
Enrico Pajer
14:40 - 15:20
Gravitational 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.
15:20
Fundamental Physics from Galaxy Surveys
-
Mikhail Ivanov
Fundamental Physics from Galaxy Surveys
Mikhail Ivanov
15:20 - 16:00
The 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.
16:00
Coffee break
Coffee break
16:00 - 16:30
16:30
Generation of peaks in primordial perturbation spectra due to variable number of slow-roll inflatons
-
Alexei Starobinsky
Generation of peaks in primordial perturbation spectra due to variable number of slow-roll inflatons
Alexei Starobinsky
16:30 - 17:10
17:10
Cosmological attractors after Planck/BICEP/Keck
-
Andrei Linde
Cosmological attractors after Planck/BICEP/Keck
Andrei Linde
17:10 - 17:50
Wednesday, 15 June 2022
10:20
Aspects of High Scale Leptogenesis with Low Energy CP Violation
-
Serguey Petcov
Aspects of High Scale Leptogenesis with Low Energy CP Violation
Serguey Petcov
10:20 - 11:00
11:00
Resonant Leptogenesis
-
Björn Garbrecht
Resonant Leptogenesis
Björn Garbrecht
11:00 - 11:40
11:40
Testable scenarios of leptogenesis
-
Marco Drewes
Testable scenarios of leptogenesis
Marco Drewes
11:40 - 12:20
12:20
Lunch
Lunch
12:20 - 14:00
14:00
2PI-approach to particle production and phase transition dynamics
-
Kimmo Kainulainen
2PI-approach to particle production and phase transition dynamics
Kimmo Kainulainen
14:00 - 14:40
14:40
CosmoLattice: The Art of Simulating the Early Universe
-
Daniel Figueroa
CosmoLattice: The Art of Simulating the Early Universe
Daniel Figueroa
14:40 - 15:20
15:20
Lattice simulations of inflation and reheating
-
Kaloian Lozanov
Lattice simulations of inflation and reheating
Kaloian Lozanov
15:20 - 16:00
16:00
Coffee break
Coffee break
16:00 - 16:30
16:30
Gravitation portals and particle production during inflationary reheating
-
Keith Olive
Gravitation portals and particle production during inflationary reheating
Keith Olive
16:30 - 17:10
17:10
Small-scale structure in vector dark matter
-
Mustafa Amin
Small-scale structure in vector dark matter
Mustafa Amin
17:10 - 17:50
17:50
Vacuum Energy of the Universe, Large scale magnetic field and nontrivial topology in Quantum Field Theory
-
Ariel Zhitnitsky
Vacuum Energy of the Universe, Large scale magnetic field and nontrivial topology in Quantum Field Theory
Ariel Zhitnitsky
17:50 - 18:30
Thursday, 16 June 2022
10:20
Lorentzian Description of the 1st Order Phase Transition
-
Kohei Kamada
Lorentzian Description of the 1st Order Phase Transition
Kohei Kamada
10:20 - 11:00
11:00
Primordial Black Holes and Vacuum Decay
-
Ruth Gregory
Primordial Black Holes and Vacuum Decay
Ruth Gregory
11:00 - 11:40
11:40
Cosmological implications of Higgs vacuum metastability
-
Arttu Rajantie
Cosmological implications of Higgs vacuum metastability
Arttu Rajantie
11:40 - 12:20
12:20
Lunch
Lunch
12:20 - 14:00
14:00
A novel technique for the description of gauge-field production during axion inflation
-
Oleksandr Sobol
A novel technique for the description of gauge-field production during axion inflation
Oleksandr Sobol
14:00 - 14:40
14:40
Electroweak model in a strong magnetic field
-
Maxim Chernodub
Electroweak model in a strong magnetic field
Maxim Chernodub
14:40 - 15:20
15:20
Cosmological stochastic gravitational wave backgrounds in LISA
-
Chiara Caprini
Cosmological stochastic gravitational wave backgrounds in LISA
Chiara Caprini
15:20 - 16:00
16:00
Coffee break
Coffee break
16:00 - 16:30
16:30
Probing the scale of grand unification with gravitational waves
-
Valerie Domcke
Probing the scale of grand unification with gravitational waves
Valerie Domcke
16:30 - 17:10
17:10
Cosmic strings and black holes
-
Alexander Vilenkin
Cosmic strings and black holes
Alexander Vilenkin
17:10 - 17:50
Friday, 17 June 2022
10:20
The nature of Dark Matter: what can we learn from astrophysical data expected in the next few years
-
Alexey Boyarsky
The nature of Dark Matter: what can we learn from astrophysical data expected in the next few years
Alexey Boyarsky
10:20 - 11:00
11:00
Dark Matter abundance via thermal decays and leptoquark mediators
-
Alessandro Strumia
Dark Matter abundance via thermal decays and leptoquark mediators
Alessandro Strumia
11:00 - 11:40
11:40
Primordial black holes and their observational constraints
-
Kazunori Kohri
Primordial black holes and their observational constraints
Kazunori Kohri
11:40 - 12:20
12:20
Lunch
Lunch
12:20 - 14:00
14:00
Big Bang nucleosynthesis -- new about old
-
Oleg Ruchayskiy
Big Bang nucleosynthesis -- new about old
Oleg Ruchayskiy
14:00 - 14:40
14:40
The problem of instability of gravitational baryogenesis and its possible resolution
-
Elena Arbuzova
The problem of instability of gravitational baryogenesis and its possible resolution
Elena Arbuzova
14:40 - 15:20
15:20
Primordial black holes as dark matter from inflation
-
Guillermo Ballesteros
Primordial black holes as dark matter from inflation
Guillermo Ballesteros
15:20 - 16:00
16:00
Coffee break
Coffee break
16:00 - 16:30
16:30
Primordial black holes in the universe and antistars in Milky Way
-
Alexander Dolgov
Primordial black holes in the universe and antistars in Milky Way
Alexander Dolgov
16:30 - 17:10
17:10
Primordial black holes as dark matter
-
Alexander Kusenko
Primordial black holes as dark matter
Alexander Kusenko
17:10 - 17:50