Primordial black holes from single field inflation?

by Junichi Yokoyama (The University of Tokyo & Kavli IPMU)

Monday 25 Mar 2024, 15:00 → 16:00 Europe/Rome

1/2-2 - Aula C (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

We calculate one-loop quantum correction to curvature perturbation in single field inflation models with temporarily ultra slow-roll behavior which enhances power spectrum on small scales to allow for formation of primordial black holes.  We find a significant corrections to larger scales that can be probed by CMB observations, revealing difficulties in such models.