Speaker
Eemeli Tomberg
(UCLouvain)
Description
Stochastic inflation allows us to study large inflationary perturbations that may collapse into primordial black holes. I discuss the spectral decomposition of the perturbation distribution in stochastic inflation near a local maximum of the inflaton potential, relevant for primordial black hole production from inflection point models. I compare the stochastic computation with results from classical $\Delta N$ formalism, illustrating, in particular, the difficulties that arise from trajectories that pass `beyond the hilltop,' into the quantum-dominated regime.
Author
Eemeli Tomberg
(UCLouvain)