Thermodynamical description of the ghost dark energy model

2015/04/23 by M. Honarvaryan, A. Sheykhi, Ahmad Sheykhi +1
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark fluid #Dark matter #Entropy (arrow of time) #Galaxies: Formation, Evolution, Phenomena #Generalization #Physics #Statistical physics #Theoretical physics #Thermodynamics #gr-qc

paper · pdf · doi:10.1142/s0218271815500480

published as Int. J. Mod. Phys. D 2 Vol. 24, No. 6 (2015) 1550048 · 11 pages

openalex publication_date 2015/04/23 · arxiv created 2015/05/02 · arxiv updated 2015/05/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this paper, we point out thermodynamical description of ghost dark energy (GDE) and its generalization to the early universe. Thereinafter, we find expressions for the entropy changes of these dark energy (DE) candidates. In addition, considering thermal fluctuations, thermodynamics of the DE component interacting with a dark matter (DM) sector is addressed. We will also find the effects of considering the coincidence problem on the mutual interaction between the dark sectors, and thus the equation of state parameter of DE. Finally, we derive a relation between the mutual interaction of the dark components of the universe, accelerated with the either GDE or its generalization, and the thermodynamic fluctuations.

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