Speaker
Sadra Jazayeri
(Imperial College London)
Description
Identifying useful flat-space limits for cosmological correlators—where they can be expressed in terms of observables in Minkowski space—is nontrivial due to their scale-invariant nature. In this talk, I present a massive flat-space limit in which cosmological correlators, induced by the exchange of heavy fields, can be expressed in terms of massive Feynman graphs in flat space. As a phenomenological application, I use this limit to compute specific one-loop contributions from heavy fields to primordial non-Gaussianity.
Author
Sadra Jazayeri
(Imperial College London)
