On the consistency of tachyon warm inflation with viscous pressure

TL;DR

This paper investigates the conditions under which a tachyon warm inflation model with viscous pressure exhibits stable attractor solutions, and derives the primordial power spectrum considering a dissipation coefficient dependent on the scalar field and temperature.

Contribution

It introduces new conditions for attractor solutions in tachyon warm inflation with viscous pressure and derives the primordial power spectrum with a variable dissipation coefficient.

Findings

Existence of attractor solutions under specific conditions.

Approach to slow-roll regime in the model.

Derived primordial power spectrum considering variable dissipation.

Abstract

We obtain conditions for the existence of an attractor in the system of equations describing a tachyon warm inflationary model with bulk viscosity taken into account. When these conditions are met the evolution approaches slow-roll regime. We present the primordial power spectrum for the tachyon field by considering a dissipation coefficient depending on the scalar field and temperature.