Rencontres franciliennes de cosmologie primordiale

Europe/Paris
Salle des seminaires (Institut d'Astrophysique de Paris)

Salle des seminaires

Institut d'Astrophysique de Paris

98 bis boulevard Arago, 75014 Paris
Julien Grain (Institut d'Astrophysique Spatiale), Sébastien Renaux-Petel (IAP-CNRS), Serreau Serreau (APC, Universite Paris Diderot), Vincent Vennin (APC Paris), Filippo Vernizzi (IPhT - CEA Saclay), Yashar Akrami (Département de Physique, École Normale Supérieure (ENS))
Description

We acknowledge financial support from the PNCG, the labex P2IO and the FRIF.

 

Registration
Participants
  • Alexander Kolodzig
  • Audouy Adèle
  • Bartjan van Tent
  • Brigitte Rocca Volmerange
  • Calum Murray
  • Chiara Caprini
  • Christos Charmousis
  • Danièle Steer
  • David Langlois
  • David Valls-Gabaud
  • Dominic Beck
  • Elias Kiritsis
  • Eric Hivon
  • Eric Huguet
  • Eugeny Babichev
  • Filippo Vernizzi
  • Francesco Nitti
  • Francois Vannucci
  • François Larrouturou
  • Gabriel Moreau
  • J Richard Bond
  • Jacopo Fumagalli
  • James Bartlett
  • Jean-Michel Alimi
  • Jean-Philippe Uzan
  • Jerome Martin
  • John Ronayne
  • Julien Grain
  • Julien Serreau Serreau
  • Jérémy Auffinger
  • karim benabed
  • Karim Noui
  • Louise Mousset
  • Lucas Pinol
  • Lukas Witkowski
  • Makarim Bouyahiaoui
  • Marco Crisostomi
  • Marie-Noëlle Célérier
  • Massimiliano Maria Riva
  • Matthew Lewandowski
  • Maxim Khlopov
  • Michela Lai
  • Michela Lai
  • Monica Guica
  • Nadège Lemarchand
  • Nick Kaiser
  • Norma G. Sanchez
  • Radek Stompor
  • Raphael Peralta
  • Ruben Monten
  • Sandrine Codis
  • Santiago Casas
  • Sebastian Garcia-Saenz
  • Silvia Galli
  • Simone Mastrogiovanni
  • Suvodip Mukherjee
  • Sylvain Vanneste
  • Sébastien Renaux-Petel
  • Theodoros Papanikolaou
  • Thomas Montandon
  • Timothy Anson
  • Vincent Vennin
    • 09:00 09:30
      Doors opening 30m
    • 09:30 09:40
      Opening and welcome forewords 10m
    • 09:40 11:00
      The cosmological bootstrap 1h 20m
      Speaker: Prof. Daniel Baumann (Amsterdam University)
    • 11:00 11:30
      Coffee break 30m
    • 11:30 12:00
      Inflation with strongly non-geodesic motion: motivation, theoretical consistency and observational signatures 30m
      Speaker: Lucas Pinol (IAP)
    • 12:00 12:45
      Discussion 45m
    • 12:45 14:00
      Lunch break 1h 15m
    • 14:00 14:30
      Backreaction of the infrared modes of scalar fields on de Sitter geometry 30m

      We study the back-reaction of the infrared modes of an O(N) theory in a classical de Sitter background. We use the nonperturbative renormalization group methods to extract the flow of the Hubble constant as we integrate the gravitationally enhanced long wavelength modes. The scalar theory flows towards an effective zero dimensional theory for the super-horizon modes, which allows to perform analytical computations. For a massless theory, the interactions tend to renormalize negatively the Hubble constant, thus drawing energy from the classical gravitational field. This phenomenon saturates however, due to the generation of a mass. Also, in the case of a broken symmetry, we show that the goldstone modes don't contribute to the flow.

      Speaker: Gabriel Moreau (Université Paris Diderot)
    • 14:30 15:00
      Discussion 30m
    • 15:00 15:30
      Coffee break 30m
    • 15:30 16:00
      (De)stabilization of the Higgs vacuum during inflation 30m
      Speaker: Dr Jacopo Fumagalli (IAP)
    • 16:00 17:00
      Discussion 1h
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