Speaker
Jesus Gambin Egea
(Instituto de Fisica Teorica, UAM - CSIC)
Description
A possible way to generate primordial black holes as candidates for the entirety of dark matter is a large power spectrum of inflationary curvature fluctuations. Recently, questions have been raised regarding the validity of perturbation theory in this context. We compute the one-loop power spectrum in ultra-slow roll inflation, including all relevant interactions for such analysis, along with counterterms that absorb the ultraviolet divergences. We compare the one-loop and tree-level contributions to the power spectrum, finding that perturbation theory remains valid in realistic ultra-slow roll models.
Primary authors
Guillermo Ballesteros
(IFT UAM-CSIC)
Jesus Gambin Egea
(Instituto de Fisica Teorica, UAM - CSIC)
