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arXiv · 1808.03825

Thermodynamically allowed phantom cosmology with viscous fluid

Miguel Cruz·Samuel Lepe·Sergei D. Odintsov
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Abstract

In this work we present an analysis of the phantom zone in a causal viscous cosmology from a thermodynamic point of view. In this description we consider a chemical potential and the approach of irreversible processes. We assume a flat universe filled with a single dissipative fluid described by a barotropic equation of state, $p = ωρ$. This model allows to construct a negative chemical potential for the phantom regime but also this construction allows us to have positive definite temperature and entropy.

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Miguel Cruz, Samuel Lepe, Sergei D. Odintsov. 2018-09-30. Thermodynamically allowed phantom cosmology with viscous fluid. https://doi.org/10.1103/physrevd.98.083515

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