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SUMMARY:Clustering of primordial black holes from quantum diffusion during
  inflation - Vincent Vennin (ENS\, Paris)
DTSTART:20240610T120000Z
DTEND:20240610T130000Z
UID:TALK211090@talks.cam.ac.uk
CONTACT:Dr  Dong-Gang Wang
DESCRIPTION:When primordial inhomogeneities are produced with sufficiently
  large amplitude in the early universe\, they may subsequently collapse in
 to primordial black holes. I will explain why the effect of quantum diffus
 ion during inflation needs to be taken into account in such a case\, and h
 ow the statistics of cosmological fluctuations can be predicted within the
  formalism of stochastic inflation. Quantum diffusion leads to a peculiar 
 type of non-Gaussianity that cannot be captured by perturbative parametris
 ations. This leaves specific imprints on the statistics of collapsed struc
 tures that I will discuss. In particular\, I will present recent results o
 n the clustering of primordial black holes\, which conditions the rate at 
 which they merge and emit gravitational waves.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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