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 $0<{m}^{2}\ensuremath{\le}2{H}^{2}$, with ${m}^{2}=2{H}^{2}$ in the self-accelerating universe.