4D gravity on a non-BPS bent dilatonic brane

Abstract

We investigate the localization of metastable four-dimensional gravity around a bent dilatonic brane, embedded into a five-dimensional space, that exists only up to distances sufficiently small compared to a crossover scale. Far from such scale, five-dimensional effects strongly deviate the Newtonian potential. We study this effect by considering localization of massive gravity on a non-BPS bent dilatonic 3-brane solution of a five-dimensional supergravity. Our results show that the cosmological constant on the bent brane controls the size of the crossover scale. For sufficiently small positive cosmological constant, that is in accord with the present observations, the crossover scale becomes very large.

7 pages, version to appear in JCAP

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• A Transfer Matrix Method for Resonances in Randall-Sundrum Models III: An analytical comparison
• A Transfer Matrix Method for Resonances in Randall-Sundrum Models II: The Deformed Case
• CMB constraints on $\beta$-exponential inflationary models
• Cosmologies of Multiple Spherical Brane-universe Model
• Brane structure from a scalar field in general covariant Horava-Lifshitz gravity
• Flat and bent branes in Born-Infeld-like scalar field models