Warm Inflation in Hybrid Model

Abstract

Warm inflation describes a scenario in the early universe where inflation occurs with significant thermal interactions, leading to a sustained thermal bath that affects infla tion dynamics and subsequent reheating processes. Although we use different models in warm inflation, the hybrid model stands out as fascinating because it incorporates different frameworks of high-energy physics such as SUSY, super-gravity, and GUT. Therefore it is instructive to explore warm inflation in the hybrid model. For this, we present a comprehensive study of warm inflation within the framework of hybrid inflation in a non-supersymmetric model with chaotic potential λpϕp, incorporating one-loop radiative corrections Aϕ4 ln ϕ/ϕc where A < 0. We incorporate quantum smearing effects to investigate the consistency of resulting cosmological observables with Planck and future experiments.