Warm Inflation in a Braneworld Scenario

TL;DR

This paper explores a warm inflation model within a braneworld framework, analyzing its dynamics under different dissipation regimes and constraining parameters using Planck 2018 and BICEP data.

Contribution

It introduces a novel warm inflation model in the braneworld scenario with both constant and variable dissipation coefficients, and evaluates its observational viability.

Findings

Model fits observational data within certain parameter ranges

Strong and weak dissipative regimes show distinct inflationary dynamics

Spectral index and tensor-to-scalar ratio are consistent with Planck 2018 and BICEP results

Abstract

In the literature, many warm inflationary models are formulated. In this piece of work, a warm inflationary model in the braneworld scenario is studied, considering constant and variable dissipation coefficients. Performance of the model has been considered in both strong and weak dissipative regimes. We study the dynamics of this scenario under slow-roll approximation and estimate cosmological observables, viz., the spectral index and tensor-to-scalar ratio. In order to constrain the parameters in our model, we consider data from Planck 2018 and BICEP.