1 research outputs found
Accelerating universe in brane gravity with a confining potential
We construct the Einstein field equations on a 4-dimensional brane embedded
in an -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 -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.Comment: 10 pages, 2 figures, to appear in Phys. Lett.