Brane induced gravity from asymmetric warped compactification

Abstract

We show that brane induced gravity can be realized as a low energy effective theory of brane worlds with asymmetric warped compactification. A self-accelerating universe without cosmological constant on the brane can be realized in a model where one side of the bulk has finite volume, but the other side has infinite volume. The spin-2 perturbations for brane induced gravity and asymmetric warped compactification models have the same spectrum at low energies. For a de Sitter brane, the spin-2 graviton has mass in the range $0<m^2\le 2H^2$, with $m^2=2H^2$ in the self-accelerating universe.

4 pages, 3 figures, typos corrected, a reference added

References in corpus (2)

• Cosmic acceleration from asymmetric branes
• Infra-red modification of gravity from asymmetric branes

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