Viscous Little Rip Cosmology

Abstract

Dark energy of phantom or quintessence nature with an equation of state parameter $w$ almost equal to -1 often leads the universe evolution to a finite-time future singularity. An elegant solution to this problem has been recently proposed \cite{frampton11} under the form of the so-called Little Rip cosmology which appears to be a realistic alternative to the $\Lambda$CDM model. A viscous Little Rip cosmology is here proposed. Whereas generically bulk viscosity tends to promote the Big Rip, we find that there are a number of situations where this is not the case and where the formalism nicely adjusts itself to the Little Rip scenario. We prove, in particular, that a viscous fluid (or, equivalently, one with an inhomogeneous (imperfect) equation of state) is perfectly able to produce a Little Rip cosmology as a purely viscosity effect. The possibility of its induction as a combined result of viscosity and a general (power-like) equation of state is also investigated in detail. To finish, a physical, inertial force interpretation of the dissolution of bound structures in the Little Rip cosmology is presented.

10 pages, version to appear in PRD

References in corpus (10)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Future of the universe in modified gravitational theories: Approaching to the finite-time future singularity
• The Little Rip
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Viscous Ricci Dark Energy
• Dark goo: Bulk viscosity as an alternative to dark energy
• Friedmann cosmology with bulk viscosity: a concrete model for dark energy
• On Isotropic Turbulence in the Dark Fluid Universe
• Evolution of the interacting viscous dark energy model in Einstein cosmology

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