Renormalised multi-field hybrid inflation
Kevlishvili, Nina (Georg-August-Universität Göttingen)

We investigate the non-equilibrium dynamics of the system of coupled scalar fields n FRW universe. The effects of quantum fluctuations including their backreaction are studies in the one-loop approximation. Special attention is payed to the non-minimal gravitational coupling and higher curvature gravity terms. We briefly discuss the renormalisation procedure there the additional finite terms ln(a(t)) appear. Their crucial rôle for the consistence is discussed. Furthermore, we present the results of numerical simulations. Special attention is payed to the initial conditions during the inflationary era.