String inspired explanation for the super-acceleration of our universe

Abstract

We investigate the effect of the bulk content in the general Gauss-Bonnet braneworld on the evolution of the universe. We find that the Gauss-Bonnet term and the combination of the dark radiation and the matter content of the bulk play a crucial role in the universe evolution. We show that our model can describe the super-acceleration of our universe with the equation of state of the effective dark energy in agreement with observations.

12 pages, 9 figures, references added

References in corpus (2)

• Cosmological Evolution of a Quintom Model of Dark Energy
• Can dark energy evolve to the Phantom?

Cited by in corpus (7)

• On Perturbations of Quintom Bounce
• Thermodynamics on the apparent horizon in generalized gravity theories
• The transition of equation of state of effective dark energy in the DGP model with bulk contents
• Modified brane cosmologies with induced gravity, arbitrary matter content and a Gauss-Bonnet term in the bulk
• Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer
• Observational constrains on the DGP brane-world model with a Gauss-Bonnet term in the bulk
• Observational constraints on the braneworld model with brane-bulk energy exchange