Name: IEA PBH #1
Start: 2020-05-18T08:00:00+02:00
End: 2020-05-19T20:00:00+02:00
Location: No location set

IEA PBH #1

de lundi 18 mai 2020 (08:00) à mardi 19 mai 2020 (20:00)

lundi 18 mai 2020
14:00 Introductory overview - Vincent Vennin (APC Paris)
Introductory overview
- Vincent Vennin (APC Paris)
14:00 - 14:30
14:45 The stochastic-delta N formalism - David Wands
The stochastic-delta N formalism
- David Wands
14:45 - 15:30
15:45 Quantum diffusion and PBHs - Chris Pattison
Quantum diffusion and PBHs
- Chris Pattison
15:45 - 16:30
16:30 Tea/coffee/whisky online break
Tea/coffee/whisky online break
16:30 - 17:00
17:00 Stochastic inflation in phase space - Julien Grain (Institut d'Astrophysique Spatiale)
Stochastic inflation in phase space
- Julien Grain (Institut d'Astrophysique Spatiale)
17:00 - 17:45
mardi 19 mai 2020
14:00 APC theory talk: General relativistic weak-field limit and Newtonian N-body simulations - Kazuya Koyama
APC theory talk: General relativistic weak-field limit and Newtonian N-body simulations
- Kazuya Koyama
14:00 - 15:00
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.
15:15 Turning in the landscape: a new mechanism for generating Primordial Black Holes - Jacopo Fumagalli feat Lukas Witkowski (IAP)
Turning in the landscape: a new mechanism for generating Primordial Black Holes
- Jacopo Fumagalli feat Lukas Witkowski (IAP)
15:15 - 16:00
16:00 Tea/coffee/whisky online break
Tea/coffee/whisky online break
16:00 - 16:30
16:30 PBHs from the preheating instability - Lucas Pinol (Institut d'Astrophysique de Paris)
PBHs from the preheating instability
- Lucas Pinol (Institut d'Astrophysique de Paris)
16:30 - 17:15
17:15 Concluding discussions
Concluding discussions
17:15 - 18:15

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