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

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

2007-08-08

arxiv.org/abs/0708.1038v2

Phys.Lett.B659:45-53,2008

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1016/j.physletb.2007.10.087

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.

Affiliated with

Also associated with

No associations

Rating

Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-215374