Thermodynamics of a transient phantom scenario

Abstract

This work is devoted to the thermodynamics description of a phantom scenario proposed previously by the authors. The presence of negative chemical potential is unavoidable if we allege for a well defined thermodynamics framework since the cosmological model passages from phantom stage at present time to a future de Sitter evolution. As noted earlier in other works, we find that the negativity of the chemical potential is necessary to save phantom dark energy from thermodynamics inconsistencies.

arXiv comment7 pages, 1 figure. Published version in Physics of the Dark Universe

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• Generalized second law of thermodynamics for the matter creation scenario and emergence of phantom regime
• A dynamical systems perspective on the thermodynamics of late-time cosmology