Tachyon Warm-Intermediate Inflationary Universe Model in High Dissipative Regime

TL;DR

This paper explores tachyonic warm inflation within an intermediate inflation framework, analyzing slow-roll dynamics, perturbations, and observational constraints, with a focus on dissipative effects and non-Gaussianity levels.

Contribution

It introduces a novel tachyonic warm inflation model with variable dissipation, analyzing its perturbations and observational viability in the high dissipative regime.

Findings

Model compatible with observational data

Non-Gaussianity levels similar to non-tachyonic models

Dissipative effects significantly influence inflation dynamics

Abstract

We consider tachyonic warm-inflationary models in the context of intermediate inflation. We derive the characteristics of this model in slow-roll approximation and develop our model in two cases, 1- For a constant dissipative parameter $\Gamma$. 2- $\Gamma$ as a function of tachyon field $\phi$. We also describe scalar and tensor perturbations for this scenario. The parameters appearing in our model are constrained by recent observational data. We find that the level of non-Gaussianity for this model is comparable with non-tachyonic model.