Modified Gravity on the Brane and Dark Energy

Details Modified Gravity on the Brane and Dark Energy Modified Gravity on the Brane and Dark Energy

2006-01-08

arxiv.org/abs/hep-th/0601047v2

Gen.Rel.Grav.38:1367-1377,2006

Physics

High Energy Physics

High Energy Physics - Theory

Revised version published in Gen. Rel. Grav. Typos corrected, updated reference and some remarks added for clarity. 11 pages,

Scientific paper

10.1007/s10714-006-0316-z

We analyze the dynamics of an AdS5 braneworld with matter fields when gravity is allowed to deviate from the Einstein form on the brane. We consider exact 5-dimensional warped solutions which are associated with conformal bulk fields of weight -4 and describe on the brane the following three dynamics: those of inhomogeneous dust, of generalized dark radiation, and of homogeneous polytropic dark energy. We show that, with modified gravity on the brane, the existence of such dynamical geometries requires the presence of non-conformal matter fields confined to the brane.

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