TH Seminars

Outcomes of strong particle production

by Ricardo Zambujal Ferreira (IFAE)

IFAE Virtual Seminar Room (IFAE)

IFAE Virtual Seminar Room


In this talk I will discuss multi-field models of inflation where there are instabilities and strong particle production due to, a priori harmless, irrelevant operators. The instabilities can move the trajectory to a new multi-field attractor where the inflaton potential can be steeper thus potentially improving the microphysical picture for inflation. I will focus on models with a fast turning rate in field space. Interestingly, these models share common dynamical properties at the background and perturbation level. I will present some recent results on the size and shape of non-Gaussianities and discuss constraints from observations and from the overproduction of primordial black holes.

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now