Warm Inflation with a General Form of the Dissipative Coefficient

TL;DR

This paper introduces a general form of the dissipative coefficient in warm inflation, analyzing its effects on slow-roll conditions and power spectrum, with particular focus on monomial and hybrid-like potentials.

Contribution

It proposes a new general form of the dissipative coefficient in warm inflation and explores its implications on inflation dynamics and power spectrum.

Findings

The cases m=0 and m=3 are particularly promising for further study.

Derived slow-roll conditions and power spectrum parameters for the general dissipative form.

Analyzed specific potentials, including monomial and hybrid-like, under the new dissipative framework.

Abstract

We propose and investigate a general form of the dissipative coefficient $\Gamma=C_{\phi}T^{m}/\phi^{m-1}$ in warm inflation. We focus on discussing the strong dissipative processes $r=\Gamma/3H\gg1$ in the thermal state of approximate equilibrium. To this toy model, we give the slow-roll conditions, the amplitude and the index of the power spectrum under the general form of dissipative coefficient. Furthermore, the monomial potential and the hybrid-like potential are analyzed specifically. We conclude that the $m=0,3$ cases are worthy further investigation especially.