Speaker
Diego Cruces
(ICCUB)
Description
During this talk I will show how non-local terms in the linearized Einstein's equations are necessary to correctly describe the behaviour of gauge invariant quantities at superhorizon scales during inflation. Once this is clarified, I will explore how some approaches that aim to describe the large quantum fluctuations responsible for the formation of Primordial Black Holes (PBH) get affected by the inclusion of non-local terms. Stochastic inflation and the \deltaN formalism are some of these approaches.
