Bayesian analysis of bulk viscous matter dominated universe

Abstract

In our previous works, we have analyzed the evolution of bulk viscous matter dominated universe with a more general form for bulk viscous coefficient, $\zeta ={\zeta }_0+{\zeta }_1\frac{\dot{a}}{a}+{\zeta }_2\frac{\ddot{a}}{\dot{a}}$ and also carried out the dynamical system analysis. We found that the model reasonably describes the evolution of the universe if the viscous coefficient is a constant. In the present work we are contrasting this model with the standard $\Lambda$CDM model of the universe using the Bayesian method. We have shown that, even though the viscous model gives a reasonable back ground evolution of the universe, the Bayes factor of the model indicates that, it is not so superior over the $\Lambda$CDM model, but have a slight advantage over it.

arXiv comment15 pages, 9 figures

References in corpus (47)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Dynamics of dark energy
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• f(R) Theories Of Gravity
• Cosmological parameters from SDSS and WMAP
• 4D Gravity on a Brane in 5D Minkowski Space
• Quantum Gravity at a Lifshitz Point
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• An alternative to quintessence
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Exponential potentials and cosmological scaling solutions
• Kinetically Driven Quintessence
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Curvature Quintessence
• Modified teleparallel gravity: inflation without inflaton
• Quintessence and the Rest of the World
• Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Information criteria for astrophysical model selection
• Gauss-Bonnet dark energy
• Scaling solutions in general non-minimal coupling theories
• Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
• How many cosmological parameters?
• Accelerating universe from F(T) gravity
• Bulk Viscous Cosmology
• Lanczos-Lovelock models of gravity
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Bulk Viscous Cosmology
• Cosmological model with viscosity media (dark fluid) described by an effective equation of state
• Bulk viscosity driving the acceleration of the Universe
• Type Ia Supernovae, Evolution, and the Cosmological Constant
• Combining cosmological datasets: hyperparameters and Bayesian evidence
• Viscous dark fluid universe
• Can a matter-dominated model with constant bulk viscosity drive the accelerated expansion of the universe?
• Exploring a matter-dominated model with bulk viscosity to drive the accelerated expansion of the Universe
• Bulk viscous matter and recent acceleration of the Universe
• Comparison of cosmological models using Bayesian theory
• Cosmic viscosity as a remedy for tension between PLANCK and LSS data
• H_0 and Odds on Cosmology
• The LambdaCDM model on the lead -- a Bayesian cosmological models comparison
• Cosmography, Decelerating Past, and Cosmological Models: Learning the Bayesian Way
• Phase space analysis of bulk viscous matter dominated universe
• Bayesian comparison of nonstandard cosmologies using type Ia supernovae and BAO data
• Bulk Viscous Matter-dominated Universes: Asymptotic Properties

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• Evolution of thermodynamic quantities on cosmological horizon in $\Lambda (t)$ model
• Energy stored on a cosmological horizon and its thermodynamic fluctuations in holographic equipartition law
• Evolution of dissipative and non-dissipative universes in holographic cosmological models with a power-law term
• Horizon thermodynamics and cosmological equations: A holographic-like connection between thermostatistical quantities on a cosmological horizon and in the bulk
• Cosmological model based on both holographic-like connection and Padmanabhan's holographic equipartition law
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