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Thermodynamic parametrization of dark energy
- Publication Year :
- 2022
-
Abstract
- We propose a model-independent parametrization of dark energy motivated by thermodynamics. To this aim, we consider Pad\'e polynomials to reconstruct the form of deceleration parameter adequate to describe different epochs of cosmic history and divergence-free in the far future. The proposed scenario also fulfills the demand of structure formation and contains the $\Lambda$CDM model as a limiting case. Thus, a numerical analysis at both background and perturbation levels is performed through the Markov Chain Monte Carlo method in view of the most recent cosmic data. We then use the observational constraints to explore the features of dark energy evolution and compare our findings with the predictions of the standard cosmological model.<br />Comment: 7 pages, 4 figures. Accepted for publication in Physics of the Dark Universe
- Subjects :
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Space and Planetary Science
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
General Relativity and Quantum Cosmology (gr-qc)
General Relativity and Quantum Cosmology
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....7504c782371f90f63756d5d429193175