Accelerating universe in brane gravity with a confining potential

Details Accelerating universe in brane gravity with a confining potential Accelerating universe in brane gravity with a confining potential

2006-07-18

arxiv.org/abs/gr-qc/0607067v3

Phys.Lett.B640:1-6,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 2 figures, to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2006.07.020

We construct the Einstein field equations on a 4-dimensional brane embedded in an $m$-dimensional bulk where the matter fields are confined to the brane by means of a confining potential. As a result, an extra term in the Friedmann equation in a $m$-dimensional bulk appears that may be interpreted as the X-matter, providing a possible phenomenological explanation for the acceleration of the universe. The study of the relevant observational data suggests good agreement with the predictions of this model.

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