Thermodynamic aspects of entropic cosmology with viscosity

Abstract

We describe the evolution of the early and late universe from thermodynamic considerations, using the generalized non-extensive Tsallis entropy with a variable exponent. A new element in our analysis is the inclusion of a bulk viscosity in the description of the cosmic fluid. Using the generalized Friedmann equation, a description of the early and the late universe is obtained.

12 pages, no figures. To appear in Int. J. Mod. Phys. D

References in corpus (6)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Modified cosmology from extended entropy with varying exponent
• Unifying Holographic Inflation with Holographic Dark Energy: a Covariant Approach
• Correspondence of cosmology from non-extensive thermodynamics with fluids of generalized equation of state
• Inhomogeneous viscous dark fluid coupled with dark matter in the FRW universe

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• Sustaining quasi de-Sitter inflation with bulk viscosity