Generalized second law of thermodynamics for the matter creation scenario and emergence of phantom regime

Abstract

This work is focused on the exploration of the thermodynamics foundations of the matter creation scenario when a generalized form of the second law of thermodynamics for this scheme is implemented. In this scenario we consider an expanding cosmology in which the created matter is trapped by the apparent horizon. The scheme leads to phantom evolution but at first glance it lacks of physical consistency. However, the inclusion of chemical potential into the description solves the thermodynamics issues of the model and determines the behavior of the cosmic fluid, in other words, the cosmic fluid now can behave as phantom dark energy or as quintessence one.

arXiv comment7 pages, no figures. Accepted for publication in EPJ Plus

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• Exploring thermodynamics inconsistencies in unimodular gravity: a comparative study of two energy diffusion functions
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• Revealing some cosmological aspects of Kaniadakis entropy
• Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension