Holographic bounce cosmological models induced by viscous dark fluid from a generalized non-singular entropy function

Abstract

Bounce cosmological models containing a dark viscous fluid in a spatially flat Friedmann-Robertson-Walker (FRW) universe are considered. The universe evolution is described in terms of generalized equation of state (EoS) parameters, in presence of the bulk viscosity. Entropic cosmology plays a key role in the discussion, and the matter bounce behavior is described based on a non-singular, generalized entropy function, recently proposed by Odintsov and Paul. Three different forms for the scale factor are investigated: an exponential, a power-law, and a double-exponential function, respectively. Appropriate bounce cosmological models are formulated, via the relevant parameters of the modified EoS, and analytical expressions for the corresponding infrared cut-off are obtained, via the particle horizon. Results are displayed in holographic form, making use of generalized holographic cut-offs first introduced by Nojiri and Odintsov. In addition, the viability of the corresponding bounce cosmological models is investigated, taking into account the actual thermodynamic properties of our universe, by means of a no-singular, generalized entropy function. In the asymptotic case, an expression for the generalized entropy is obtained, which remarkably has the additivity property.

arXiv comment20 pages, no figures, on line ready for publication in IJGMMP

References in corpus (41)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Phantom Energy and Cosmic Doomsday
• A Model of Holographic Dark Energy
• Quantum deSitter cosmology and phantom matter
• Unifying phantom inflation with late-time acceleration: scalar phantom-non-phantom transition model and generalized holographic dark energy
• The Area of a Rough Black Hole
• Towards a Nonsingular Bouncing Cosmology
• Statistical mechanics in the context of special relativity II
• Observational constraints on dark energy with generalized equations of state
• Generalized entropy formalism and a new holographic dark energy model
• The Little Rip
• Bounce cosmology from $F(R)$ gravity and $F(R)$ bigravity
• Viscous Little Rip Cosmology
• Covariant Generalized Holographic Dark Energy and Accelerating Universe
• Early and late universe holographic cosmology from a new generalized entropy
• Bouncing cosmology in modified Gauss-Bonnet gravity
• Non-extensive Statistical Mechanics and Black Hole Entropy From Quantum Geometry
• Models for Little Rip Dark Energy
• Pseudo-rip: Cosmological models intermediate between the cosmological constant and the little rip
• Phantom Cosmology without Big Rip Singularity
• Matter Bounce Loop Quantum Cosmology from $F(R)$ Gravity
• Cosmology of the Very Early Universe
• Scalar dark energy models mimicking $\Lambda$CDM with arbitrary future evolution
• Inflationary universe in terms of a van der Waals viscous fluid
• Cyclic, ekpyrotic and little rip universe in modified gravity
• Dark Energy Coupled with Dark Matter in Viscous Fluid Cosmology
• From Big to Little Rip in modified F(R,G) gravity
• Unstable growth of curvature perturbation in non-singular bouncing cosmologies
• Holographic realization from inflation to reheating in generalized entropic cosmology
• Quasi-Rip: A New Type of Rip Model without Cosmic Doomsday
• Bounce Universe Induced by an Inhomogeneous Dark Fluid Coupled with Dark Matter
• Viscous Coupled Fluids in Inflationary Cosmology
• Effective Dark Energy Models and Dark Energy Models with Bounce in frames of $F(T)$ Gravity
• Little Rip cosmological models with time-dependent equation of state
• Equation-of-state formalism for dark energy models on the brane and the future of brane universes
• Inflationary Universe with a Viscous Fluid Avoiding Self-Reproduction
• Quasi-Rip and Pseudo-Rip Universes Induced by the Fluid Inhomogeneous Equation of State
• Little Rip, Pseudo Rip and bounce cosmology with generalized equation of state in non-standard backgrounds