Low Energy Supersymmetry in Warped Brane Worlds

TL;DR

This paper explores the low-energy effective supergravity in warped brane world models, focusing on supersymmetry breaking, moduli stabilization, and cosmological constant cancellation within the Randall--Sundrum framework.

Contribution

It generalizes the effective 4d action to arbitrary warp factors and discusses mechanisms for supersymmetry breaking and stabilization of interbrane distance.

Findings

Cosmological constant can be canceled with brane superpotential.

Supersymmetry breaking may stabilize the interbrane distance.

Generalized effective 4d action for arbitrary warp factors.

Abstract

We discuss physical implications of the four-dimensional effective supergravity, that describes low-energy physics of the Randall--Sundrum model with moduli fields in the bulk and charged chiral matter living on the branes. Cosmological constant can be cancelled through the introduction of a brane Polonyi field and a brane superpotential for the 4d dilaton. We deduce a generalization of the effective 4d action to the case of a general, not necessarily exponential, warp factor. We note, that breakdown of supersymmetry in generic warped models may lead to the stabilization of the interbrane distance.