A new approach to $P-V$ phase transitions: Einstein gravity and holographic type dark energy

Abstract

In the framework of Einstein's gravity, we study the thermodynamic equation state, $P=P(V,T)$, associated with a flat Friedmann-Lemaitre-Robertson-Walker (FLRW) universe. In this scenario, we consider the components of the dark sector as non-interacting fluids that dominate the universe's energy content at late times. Under these circumstances, the functional structure of the cosmological coincidence parameter plays a relevant role in admitting first-order $P-V$ phase transitions; specifically, the dark energy density and the coincidence parameter must be given in terms of the radius of the apparent horizon.

20 pages, 4 figures. Accepted for publication in Physics of the Dark Universe

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Cited by in corpus (3)

• Exploring thermodynamics inconsistencies in unimodular gravity: a comparative study of two energy diffusion functions
• A dynamical systems perspective on the thermodynamics of late-time cosmology
• First-order phase transitions and cosmic evolution: thermodynamic approach to generalized holographic dark energy