Quasilocalization of gravity on a brane by resonant modes

Citation
C. Csaki et al., Quasilocalization of gravity on a brane by resonant modes, PHYS REV L, 84(26), 2000, pp. 5932-5935
Citations number
8
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
26
Year of publication
2000
Pages
5932 - 5935
Database
ISI
SICI code
0031-9007(20000626)84:26<5932:QOGOAB>2.0.ZU;2-4
Abstract
We examine the behavior of gravity in brane theories with extra dimensions in a nonfactorizable background geometry. We find that for metrics which ar e asymptotically flat: far from the brane there is a resonant graviton mode at zero energy. The presence of this resonance ensures quasilocalization o f gravity, whereby at intermediate scales the gravitational laws on the bra ne are approximately four dimensional. However, for scales larger than the lifetime of the graviton resonance the five-dimensional laws of gravity wil l be reproduced due to the decay of the four-dimensional graviton. We also give a simple classification of effective gravity theories for general back ground geometries.