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Meeting ID: 912 6837 5577
Password: 128401

For Kazuya's talks, please connect to:

  • Alireza Talebian
  • Amin Nassirirad
  • Chris Pattison
  • David Wands
  • Emmanuel Frion
  • Guilherme Brando de Oliveira
  • Hassan Firouzjahi
  • Hooshyar Assadullahi
  • Jacopo Fumagalli
  • Joe Jackson
  • Julien Grain
  • Kazuya Koyama
  • Laura Iacconi
  • Lukas Witkowski
  • Mahdiyar Noorbala
  • Mohsen Khodadi
  • Nahid ahmadi
  • Sébastien Renaux-Petel
  • Tays Miranda
  • Vincent Vennin
  • Yuichiro Tada
    • 2:00 PM 2:30 PM
      Introductory overview 30m
      Speaker: Vincent Vennin (APC Paris)
    • 2:45 PM 3:30 PM
      The stochastic-delta N formalism 45m
      Speaker: David Wands
    • 3:45 PM 4:30 PM
      Quantum diffusion and PBHs 45m
      Speaker: Chris Pattison
    • 4:30 PM 5:00 PM
      Tea/coffee/whisky online break 30m
    • 5:00 PM 5:45 PM
      Stochastic inflation in phase space 45m
      Speaker: Julien Grain (Institut d'Astrophysique Spatiale)
    • 2:00 PM 3:00 PM
      APC theory talk: General relativistic weak-field limit and Newtonian N-body simulations 1h

      Abstract: Future galaxy surveys such as Euclid, LSST and SKA will cover larger and larger scales where general relativistic effects become important. On the other hand, our study of large scale structure still relies on Newtonian N-body simulations. I show how standard Newtonian N-body simulations can be interpreted in terms of the weak-field limit of general relativity. Our framework allows the inclusion of radiation perturbations and the non-linear evolution of matter. I show how to construct the weak-field metric by combining Newtonian simulations with results from Einstein-Boltzmann codes. I discuss observational effects on weak lensing and ray tracing, identifying important relativistic corrections. Finally, I briefly discuss recent developments of GR simulations in cosmology.

      Speaker: Kazuya Koyama
    • 3:15 PM 4:00 PM
      Turning in the landscape: a new mechanism for generating Primordial Black Holes 45m
      Speaker: Jacopo Fumagalli feat Lukas Witkowski (IAP)
    • 4:00 PM 4:30 PM
      Tea/coffee/whisky online break 30m
    • 4:30 PM 5:15 PM
      PBHs from the preheating instability 45m
      Speaker: Lucas Pinol (Institut d'Astrophysique de Paris)
    • 5:15 PM 6:15 PM
      Concluding discussions 1h