Thermodynamic parametrization of dark energy

Abstract

We propose a model-independent parametrization of dark energy motivated by thermodynamics. To this aim, we consider Padé 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.

arXiv comment7 pages, 4 figures. Accepted for publication in Physics of the Dark Universe

References in corpus (46)

• Dynamics of dark energy
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• The trouble with $H_0$
• Reconstructing the Cosmic Equation of State from Supernova distances
• Cosmography: Cosmology without the Einstein equations
• Geometrothermodynamics
• Type Ia Supernova Distances at z > 1.5 from the Hubble Space Telescope Multi-Cycle Treasury Programs: The Early Expansion Rate
• Cosmographic analysis of the equation of state of the universe through Padé approximations
• Tension and constraints on modified gravity parametrizations of $G_{\text{eff}}(z)$ from growth rate and Planck data
• Dark matter, dark energy, and alternate models: A review
• A Simple Phenomenological Emergent Dark Energy Model can Resolve the Hubble Tension
• The Hubble series: Convergence properties and redshift variables
• On the theory and applications of modern cosmography
• High-redshift cosmography: auxiliary variables versus Padé polynomials
• Model independent constraints on dark energy evolution from low-redshift observations
• General Relativity from a Thermodynamic Perspective
• Precision cosmology with Padé rational approximations: theoretical predictions versus observational limits
• Cosmographic analysis with Chebyshev polynomials
• Holographic dark energy from nonadditive entropy: cosmological perturbations and observational constraints
• Speeding up the universe using dust with pressure
• Three thermodynamically-based parametrizations of the deceleration parameter
• Comprehensive cosmographic analysis by Markov Chain Method
• Cosmographic Constraints and Cosmic Fluids
• Growth of matter perturbations in non-minimal teleparallel dark energy
• A thermodynamic motivation for dark energy
• Measurements of $H_0$ in modified gravity theories: The role of lensed quasars in the late-time Universe
• Kinematic model-independent reconstruction of Palatini $f(R)$ cosmology
• Dark Energy and Dark Matter from an additional adiabatic fluid
• Effective field description of the Anton-Schmidt cosmic fluid
• Extended logotropic fluids as unified dark energy models
• Testing Dark energy models in the light of ${\sigma }_8$ tension
• Observational constraints on key-parameters of cosmic reionisation history
• Thermodynamics and dark energy
• Tracing the cosmic history by Gauss-Bonnet gravity
• Testing generalized logotropic models with cosmic growth
• Information entropy and dark energy evolution
• Investigating Dark Energy Equation of State With High Redshift Hubble Diagram
• Model-independent constraints on cosmic curvature: implication from the future gravitational wave observation DECIGO
• Emerging the dark sector from thermodynamics of cosmological systems with constant pressure
• Dark energy from Geometrothermodynamics
• Modeling dark energy through an Ising fluid with network interactions

Cited by in corpus (2)

• Constraints on the Parameterized Deceleration Parameter in FLRW Universe
• Saez-Ballester gravity in Kantowski-Sachs Universe: a new reconstruction paradigm for Barrow Holographic Dark Energy