Brane Cosmology with a Non-Minimally Coupled Bulk-Scalar Field

Details Brane Cosmology with a Non-Minimally Coupled Bulk-Scalar Field Brane Cosmology with a Non-Minimally Coupled Bulk-Scalar Field

2006-11-16

arxiv.org/abs/hep-th/0611181v1

Class.Quant.Grav.24:3701-3712,2007

Physics

High Energy Physics

High Energy Physics - Theory

15 pages

Scientific paper

10.1088/0264-9381/24/14/010

We consider the cosmological evolution of a brane in the presence of a bulk scalar field coupled to the Ricci scalar through a term f(\phi)R. We derive the generalized Friedmann equation on the brane in the presence of arbitrary brane and bulk-matter, as well as the scalar field equation, allowing for a general scalar potential V(phi). We focus on a quadratic form of the above non-minimal coupling and obtain a class of late-time solutions for the scale factor and the scalar field on the brane that exhibit accelerated expansion for a range of the non-minimal coupling parameter.

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