Thermodynamic descriptions of Polytropic gas and its viscous type as the dark energy candidates

Abstract

In this paper, at first, we focus on a FRW universe in which the dark energy candidate satisfies the Polytropic equation of state and study thermodynamics of dark energy. Bearing the thermal fluctuation theorem in mind, we establish a relation between the thermal fluctuation of system and mutual interaction between the dark energy and dark matter. Generalization to a viscous Polytropic gas is also investigated. We point to a condition for decaying dark energy candidate into the dark matter needed for alleviating coincidence problem. The effects of dark energy candidates and their interactions with other parts of cosmos on the horizon entropy as well as the second law of thermodynamics are also addressed. Our study signals us to a correction term besides the Bekenstein entropy which carries the information of the dark energy candidate, its interaction with other parts of cosmos and its viscosity.

13 pages, Can. J. Phys. (2016)

References in corpus (19)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Thermodynamic Behavior of Friedmann Equation at Apparent Horizon of FRW Universe
• Thermodynamical Properties of Apparent Horizon in Warped DGP Braneworld
• The new form of the equation of state for dark energy fluid and accelerating universe
• Le Chatelier-Braun principle in cosmological physics
• Deep Connection Between Thermodynamics and Gravity in Gauss-Bonnet Braneworld
• Interacting Dark Energy and Dark Matter: observational Constraints from Cosmological Parameters
• Thermodynamical description of the interaction between holographic dark energy and dark matter
• Matter density perturbations in interacting quintessence models
• A preliminary analysis of the energy transfer between the dark sectors of the Universe
• Interacting quintessence dark energy models in Lyra manifold
• Polytropic dark matter flows illuminate dark energy and accelerated expansion
• Reconstructing interacting new agegraphic polytropic gas model in non-flat FRW universe
• Thermodynamical description of the ghost dark energy model
• Thermodynamical description of interacting entropy-corrected new agegraphic dark energy
• Thermodynamic of universe with a varying dark energy component
• Thermodynamic behavior and stability of Polytropic gas
• Thermodynamic analysis of universes with the initial and final de-Sitter eras
• Thermodynamical description of modified generalized Chaplygin gas model of dark energy

Cited by in corpus (8)

• Generalized entropy formalism and a new holographic dark energy model
• Thermodynamic approach to holographic dark energy and the Rényi entropy
• Accelerated cosmos in a non-extensive setup
• Implications, consequences and interpretations of generalized entropy in the cosmological setups
• Thermodynamics of flat FLRW universe in Rastall Theory
• Thermodynamic analysis of gravitational field equations in Lyra manifold
• Thermodynamical study of FRW universe in Quasi-Topological Theory
• Polytropic $f(Q)$ cosmology and its implications for the $H_0$ tension