Observational constraints on dark energy with generalized equations of state

Abstract

We investigate the effects of viscosity terms depending on the Hubble parameter and its derivatives in the dark energy equation of state. Such terms are possible if dark energy is a fictitious fluid originating from corrections to the Einstein general relativity as is the case for some braneworld inspired models or fourth order gravity. We consider two classes of models whose singularities in the early and late time universe have been studied by testing the models against the dimensionless coordinate distance to Type Ia Supernovae and radio-galaxies also including priors on the shift and the acoustic peak parameters. It turns out that both models are able to explain the observed cosmic speed up without the need of phantom (w < -1) dark energy.

16 pages, 4 figures

References in corpus (16)

• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Cosmology and the Fate of Dilatation Symmetry
• Properties of singularities in (phantom) dark energy universe
• Inhomogeneous Equation of State of the Universe: Phantom Era, Future Singularity and Crossing the Phantom Barrier
• Reconciling dark energy models with f(R) theories
• WMAP constraints on low redshift evolution of dark energy
• Dark Energy Dominance and Cosmic Acceleration in First Order Formalism
• Unified phantom cosmology: inflation, dark energy and dark matter under the same standard
• Dark Energy and Viscous Cosmology
• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• Cosmological model with viscosity media (dark fluid) described by an effective equation of state
• Two viable quintessence models of the Universe: confrontation of theoretical predictions with observational data
• Coupling Quintessence to Inflation in Supergravity
• Cosmography, Decelerating Past, and Cosmological Models: Learning the Bayesian Way
• Inflessence: a phenomenological model for inflationary quintessence
• Interacting viscous mixtures

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