Four-Dimensional Supergravities from Five-Dimensional Brane Worlds

Details Four-Dimensional Supergravities from Five-Dimensional Brane Worlds Four-Dimensional Supergravities from Five-Dimensional Brane Worlds

2001-02-21

arxiv.org/abs/hep-th/0102145v2

Nucl.Phys. B613 (2001) 189-217

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, plain Latex, typos corrected

Scientific paper

10.1016/S0550-3213(01)00376-5

We give the explicit form of the four dimensional effective supergravity action, which describes low energy physics of the Randall-Sundrum model with moduli fields in the bulk and charged chiral matter living on the branes. The relation between 5d and 4d physics is explicit: the low energy action is derived from the compactification of a locally supersymmetric model in five dimension. The presence of odd $Z_2$ parity scalars in the bulk gives rise to effective potential for the radion in four dimensions. We describe the mechanism of supersymmetry breaking mediation, which relies on non-trivial configuration of these $Z_2$-odd bulk fields. Broken supersymmetry leads to stabilization of the interbrane distance.

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