On Chaplygin Gas Braneworld Inflation with Monomial Potential

TL;DR

This paper explores Chaplygin gas models as a viable inflationary scenario within the Randall-Sundrum braneworld framework, analyzing perturbation parameters and their compatibility with Planck data.

Contribution

It introduces a detailed analysis of inflation driven by Chaplygin gas in a braneworld context, including perturbation calculations and observational consistency.

Findings

Perturbation parameters depend on multiple model parameters.

Model predictions are compatible with Planck data.

Achieves a spectral index close to 0.965.

Abstract

In this paper we study the Chaplygin gas model as a candidate for inflation in the framework of the Randall Sundrum type-II braneworld model. We consider the original and generalized Chaplygin gas model in the presence of monomial potential. The inflationary spectrum perturbation parameters are reformulated and evaluated in the high-energy limit and we found that they depend on several parameters. We also showed that these perturbation parameters are widely compatible with the recent Planck data for a particular choice of the parameters space of the model. A suitable observational central value of $n_{s}\simeq $ $0.965$ is also obtained in the case of original and generalized Chaplygin gas.