Thermodynamics of Modified Chaplygin Gas and Tachyonic Field

TL;DR

This paper explores the thermodynamical properties and stability of modified Chaplygin gas and tachyonic field models, analyzing their equations of state and stability during expansion, with implications for cosmological models.

Contribution

It generalizes previous models by studying thermodynamics and stability of both modified Chaplygin gas and tachyonic fields, providing new insights into their behavior during cosmic expansion.

Findings

No critical points found during thermodynamical expansion.

Thermal quantities analyzed using reduced parameters.

Determined temperature evolution $T_{*}$ during expansion.

Abstract

Here we generalize the results of the work of ref. [10] in modified Chaplygin gas model and tachyonic field model. Here we have studied the thermodynamical behaviour and the equation of state in terms of volume and temperature for both models. We have used the solution and the corresponding equation of state of our previous work [12] for tachyonic field model. We have also studied the thermodynamical stability using thermal equation of state for the tachyonic field model and have shown that there is no critical points during thermodynamical expansion. The determination of $T_{*}$ due to expansion for the tachyonic field have been discussed by assuming some initial conditions. Here, the thermal quantities have been investigated using some reduced parameters.