Thermodynamics and energy condition analysis for Van-Der-Waals EOS without viscous cosmology
Alokananda Kar, Shouvik Sadhukhan, Surajit Chattopadhyay
TL;DR
This paper analyzes Van-Der-Waals fluid models in cosmology, examining their thermodynamics, stability, and singularity issues across different cosmic phases, based on generalized equations of state.
Contribution
It introduces a detailed thermodynamic and stability analysis for three types of Van-Der-Waals fluid models in cosmology, addressing finite time singularities.
Findings
Different cosmic phases affect model parameters
Thermodynamic stability conditions are established
Finite time future singularities are resolved
Abstract
In this paper we have studied Van-Der-Waals fluid system with the generalized EOS as as discussed in the recent works of Kremer, G.M [1, 4], Vardiashvili, G [2], Jantsch, R.C [3], Capozziello, S [5]. and are functions of energy density and time that are different for the three types of Van der Waals fluid which are one parameter model, two parameters model and three parameters model. We have studied the changes in the parameters for different cosmic phases. We have also investigated the thermodynamics and the stability conditions for these three models. Finally, we have resolved the finite time future singularity problems
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