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

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dc.creatorWu, Shao-Feng
dc.creatorChatrabhuti, Auttakit
dc.creatorYang, Guo-Hong
dc.creatorZhang, Peng-Ming
dc.date2007-08-08
dc.date2007-10-29
dc.date.accessioned2026-07-07T11:18:31Z
dc.date.available2026-07-07T11:18:31Z
dc.descriptionWe 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.
dc.description11 pages,3 figures, revtex4, revised version, accepted for publication in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0708.1038
dc.identifierhttp://arxiv.org/abs/0708.1038
dc.identifierPhys.Lett.B659:45-53,2008
dc.identifierdoi:10.1016/j.physletb.2007.10.087
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193371
dc.subjectAstrophysics
dc.titleCrossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer
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