Chaplygin DGP cosmologies

Abstract

A new class of braneworld models displaying late-time phantom acceleration without resorting to a phantom fluid is presented. In this scenario expansion is fuelled by dark matter together with some effective dark energy capable of crossing the phantom divide. Unlike a previous proposal of this nature, in these models the effective phantom behaviour remains valid at all redshifts for some choices of the free parameters of the models. The construction is based on the generalised Chaplygin gas, and the cosmological history interpolates between a standard CDM-like behaviour at early times and a de Sitter-like behaviour at late times, so no future singularity is reached.

8 pages, 4 figures, revtex

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Cited by in corpus (14)

• Holographic Chaplygin DGP cosmologies
• Testing the equation of state for viscous dark energy
• Tachyon-Chaplygin inflationary universe model
• Dynamics of holographic vacuum energy in the DGP model
• Chaplygin inflation on the brane
• Phantom-like behaviour in a brane-world model with curvature effects
• Warm-Chaplygin inflationary universe model
• Crossing the phantom divide line in the Holographic dark energy model in a closed universe
• Holographic dark energy and validity of the generalized second law of thermodynamics in the dgp brane world
• Constant-roll Inflation in Brane Induced Gravity Cosmology
• Chaplygin gas in decelerating DGP gravity and the age of the oldest star
• Can Phantom-Dominated Universe Decelerate Also in Future ?
• The nature of cosmological singularities in isotropic universes and braneworlds
• Non-linear Equation of State, COSMIC Acceleration and Deceleration During Phantom-Dominance