Fresh inflation: A warm inflationary model from a zero temperature initial state

Abstract

A two-component mixture fluid which complies with the gamma law is considered in the framework of inflation with finite temperature. The model is developed for a quartic scalar potential without symmetry breaking. The radiation energy density is assumed to be zero when inflation starts and remains below the grand unified theory (GUT) temperature during the inflationary stage. Furthermore, it provides the necessary number of e folds and sufficient radiation energy density so GUT baryogenesis can take place near the minimum energetic configuration.