Speaker
Dr
Marco Drewes
(Université catholique de Louvain)
Description
We show that the parameter space of single field models of inflation contains viable regions in which the inflaton couplings to radiation can be determined from the properties of CMB temperature fluctuations, in particular the spectral index. This may be the only way to measure these fundamental microphysical parameters, which shaped the universe by setting the initial temperature of the hot big bang and contain important information about the embedding of a given model of inflation into a more fundamental theory of physics. We apply the method to $\alpha$-attractor models in which the inflaton couples to other scalars or fermions.
Primary author
Dr
Marco Drewes
(Université catholique de Louvain)
Co-authors
Dr
Jin U Kang
(ICTP)
Mr
Ui Ri Mun
(SISSA)
