Dynamics of Warm Chaplygin Gas Inflationary Models With Quartic Potential

TL;DR

This paper investigates warm inflation models with various Chaplygin gas types using a quartic potential, showing compatibility with observational data and analyzing key inflationary parameters.

Contribution

It introduces warm inflation models with generalized Chaplygin gas types using a quartic potential, aligning theoretical predictions with recent observational constraints.

Findings

Tensor-to-scalar ratio r is below 0.05, 0.15, and 0.12 for different Chaplygin gas models.

Models are consistent with WMAP9 and Planck data.

Quartic potential, previously ruled out in cold inflation, is viable in these warm inflation scenarios.

Abstract

Warm inflationary universe models in the context of generalized chaplygin gas, modified chaplygin gas, generalized cosmic chaplygin gas are being studied. The dissipative coefficient of the form $\Gamma\propto T$, weak and strong dissipative regimes are being considered. We use quartic potential $\frac{\lambda_{*}\phi^{4}}{4}$, which is ruled out by current data in cold inflation but in our models it is analyzed that it is in agreement with the WMAP$9$ and latest Planck data. In these scenarios, the power spectrum, spectral index, and tensor to scalar ratio are being examined under the slow roll approximation. We show the dependence of tensor scalar ratio $r$ on spectral index $n_{s}$ and observe that the range of tensor scalar ratio is $r<0.05$ in generalized chaplygin gas, $r<0.15$ in modified chaplygin gas, and $r<0.12$ in generalized cosmic chaplygin gas models. Our results are in agreement with recent observational data like WMAP$9$ and latest Planck data.