Speaker
Mr
Soomin Choi
(Chung-Ang University)
Description
We consider the inflation model of a singlet scalar field (sigma field) with both quadratic and linear non-minimal couplings where unitarity is ensured up to the Planck scale. We assume that a Z2 symmetry for the sigma field is respected by the scalar potential in Jordan frame but it is broken explicitly by the linear non-minimal coupling due to quantum gravity. Also, we discuss a novel reheating process with quartic potential dominance.
