Interacting cosmic fluids and phase transitions under a holographic modeling for dark energy

Abstract

We discuss the consequences of possible sign changes of the $Q$-function which measures the energy transference between dark energy and dark matter. We investigate this scenario from a holographic perspective to modeling the dark energy by a linear-parametrization of the equation of state parameter denoted by $\omega$. By imposing the strong constraint of the second law of thermodynamics, we show that sign changes of $Q$ due to the cosmic evolution imply changes in the temperatures of dark energy and dark matter, respectively. We also discuss the phase transitions, in the past and future, experienced by dark energy and dark matter (or, equivalently, the sign changes of their heat capacities).

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Cited by in corpus (7)

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• III. Interacting Dark Energy: Summary of Models, Pathologies, and Constraints
• Qualitative description of the universe in the interacting fluids scheme
• Bayesian Comparison of Interacting Modified Holographic Ricci Dark Energy Scenarios
• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Matter production effects and interacting scenario within a reconstructed mimetic cosmology for late times
• Quintessence and false vacuum: Two sides of the same coin?