Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer

Abstract

We consider the Randall-Sundrum brane-world model with bulk-brane energy transfer where the Einstein-Hilbert action is modified by curvature correction terms: a four-dimensional scalar curvature from induced gravity on the brane, and a five-dimensional Gauss-Bonnet curvature term. It is remarkable that these curvature terms will not change the dynamics of the brane universe at low energy. Parameterizing the energy transfer and taking the dark radiation term into account, we find that the phantom divide of the equation of state of effective dark energy could be crossed, without the need of any new dark energy components. Fitting the two most reliable and robust SNIa datasets, the 182 Gold dataset and the Supernova Legacy Survey (SNLS), our model indeed has a small tendency of phantom divide crossing for the Gold dataset, but not for the SNLS dataset. Furthermore, combining the recent detection of the SDSS baryon acoustic oscillations peak (BAO) with lower matter density parameter prior, we find that the SNLS dataset also mildly favors phantom divide crossing.

11 pages,3 figures, revtex4, revised version, accepted for publication in Phys. Lett. B

References in corpus (7)

• Can dark energy evolve to the Phantom?
• Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
• Gauss-Bonnet cosmologies: crossing the phantom divide and the transition from matter dominance to dark energy
• Lookback time as a test for brane cosmology
• Crossing the phantom barrier with purely kinetic multiple k-essence
• String inspired explanation for the super-acceleration of our universe
• Scale Factor Dependent Equations of State for Curvature Inspired Dark Energy, Phantom Barrier and Late Cosmic Acceleration

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