Statefinder analysis of universe models with a viscous cosmic fluid and a fluid with a non-linear equation of state

Abstract

In the present article we analyze, by means of the statefinder parameter formalism, some universe models introduced by Brevik and co-workers. We determine constants that earlier were left unspecified, in terms of observable quantities. It is verified that a Big Bang universe model with a fluid having a certain non-linear equation of state behaves in the same way as a model with a viscous fluid.

15 pages and 1 figure

References in corpus (10)

• Statefinder Diagnosis for Ricci Dark Energy
• Statefinder diagnosis for the interacting model of holographic dark energy
• Statefinder Diagnostic and w-w' Analysis for the Agegraphic Dark Energy Models without and with Interaction
• Crossing of the w=-1 barrier in viscous modified gravity
• Statefinder diagnostic for the modified polytropic Cardassian universe
• Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State
• Statefinder parameters in two dark energy models
• Statefinder Diagnostic for Quintessence with or without Thermal Interaction
• Two-Fluid Viscous Modified Gravity on a RS Brane
• Viscous Cosmology, Entropy, and the Cardy-Verlinde Formula