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

TL;DR

This paper introduces a warm inflation model starting from zero temperature, involving a two-component fluid and a quartic scalar potential, ensuring sufficient e-folds and radiation for GUT baryogenesis.

Contribution

It develops a novel warm inflation model with zero initial temperature using a two-component fluid and a quartic potential, addressing baryogenesis.

Findings

Model achieves necessary e-folds for inflation

Radiation remains below GUT temperature during inflation

Supports GUT baryogenesis near the minimum energy state

Abstract

A two-components 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 GUT temperature during the inflationary stage. Furthermore, provides the necessary number of e-folds and sufficient radiation energy density to GUT baryogenesis can take place near the minimum energetic configuration.