Theory

# Theory seminar: Paolo Creminelli

Europe/Amsterdam
Nikhef

#### Nikhef

Description
"Inflation: perturbation theory and beyond."

Abstract:
Inflationary perturbations are approximately Gaussian and deviations
from Gaussianity are the subject of an intense theoretical and
experimental study.

Deviations from Gaussianity are usually calculated using perturbation
theory. This method, however, fails for unlikely events on the tail of
the probability distribution, like the formation of a primordial black
hole. I will explain how one can explore these unlikely tails using
semiclassical methods.