Thermodynamically allowed phantom cosmology with viscous fluid

Miguel Cruz, Samuel Lepe, Sergei D. Odintsov

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


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 us to construct a negative chemical potential for the phantom regime and have positive definite temperature and entropy.

Original languageEnglish
Article number083515
JournalPhysical Review D
Issue number8
StatePublished - 15 Oct 2018


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