Study of thermal stability for different dark energy models
arXiv:1802.07925 · doi:10.1142/S0219887819501718
Abstract
In the present work, we have made an attempt to investigate the dark energy possibility from the thermodynamical point of view. For this purpose, we have studied thermodynamic stability of three popular dark energy models in the framework of an expanding, homogeneous, isotropic and spatially flat FRW Universe filled with dark energy and cold dark matter. The models considered in this work are Chevallier-Polarski-Linder (CPL) model, Generalized Chaplygin Gas (GCG) model and Modified Chaplygin Gas (MCG) model. By considering the cosmic components (dark energy and cold dark matter) as perfect fluid, we have examined the constraints imposed on the total equation of state parameter () of the dark fluid by thermodynamics and found that the phantom nature () is not thermodynamically stable. Our investigation indicates that the dark fluid models (CPL, GCG and MCG) are thermodynamically stable under some restrictions of the parameters of each model.
arXiv comment7 pages, 6 figures
References in corpus (21)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Planck 2013 results. XVI. Cosmological parameters
- Cosmological parameters from SDSS and WMAP
- Cosmological Constant - the Weight of the Vacuum
- An alternative to quintessence
- A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
- Exploring the Expansion History of the Universe
- Accelerating Universes with Scaling Dark Matter
- Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
- The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
- Observational constraints on dark energy with generalized equations of state
- Extended Gravity Cosmography
- Generalized Chaplygin gas and CMBR constraints
- Thermodynamics, Spectral Distribution and the Nature of Dark Energy
- A thermodynamic motivation for dark energy
- Constraints on a generalized deceleration parameter from cosmic chronometers
- Thermodynamic aspects of dark energy fluids
- Thermodynamical stability for perfect fluid