Inhomogeneous fluids for warm inflation

TL;DR

This paper explores inhomogeneous fluid models as a mechanism for warm inflation, demonstrating their ability to produce early acceleration, transition to radiation dominance, and compatibility with Planck data.

Contribution

It introduces inhomogeneous fluid models for warm inflation, analyzing their dynamics, dissipation regimes, and observational viability, which is a novel approach in inflationary cosmology.

Findings

Inhomogeneous fluids support early-time acceleration.

Models transition smoothly to radiation-dominated era.

Models are consistent with Planck observational data.

Abstract

Inhomogeneous fluid models for warm inflation are investigated. The early-time acceleration is supported by inhomogeneous fluid whose coupling with radiation leads to the radiation dominated era after inflation. Several examples are analyzed, strong dissipation regime is discussed, and the viability of the models respect to the last Planck data is verified.