Asymmetric brane-worlds with induced gravity

Details Asymmetric brane-worlds with induced gravity Asymmetric brane-worlds with induced gravity

2004-11-19

arxiv.org/abs/gr-qc/0411097v2

Phys.Rev. D71 (2005) 024032

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

references added; version to appear Phys Rev D

Scientific paper

10.1103/PhysRevD.71.024032

The Randall-Sundrum scenario, with a 1+3-dimensional brane in a 5-dimensional bulk spacetime, can be generalized in various ways. We consider the case where the Z2-symmetry at the brane is relaxed, and in addition the gravitational action is generalized to include an induced gravity term on the brane. We derive the complete set of equations governing the gravitational dynamics for a general brane and bulk, and identify how the asymmetry and the induced gravity act as effective source terms in the projected field equations on the brane. For a Friedmann brane in an anti de Sitter bulk, the solution of the Friedmann equation is given by the solution of a quartic equation. We find the perturbative solutions for small asymmetry, which has an effect at late times.

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