Warped Supersymmetric Radius Stabilization

TL;DR

This paper presents a simple supersymmetric model for stabilizing the extra-dimensional radius in a Randall-Sundrum setup, ensuring stability even with supersymmetry breaking and suppressing unwanted quantum corrections.

Contribution

It introduces a minimal model with a bulk hypermultiplet and boundary sources that achieves radius stabilization via supersymmetric vacuum conditions.

Findings

Radius can be stabilized by supersymmetric conditions.

Radion mass can exceed gravitino and SUSY breaking scales.

Quantum corrections are suppressed, making anomaly mediation dominant.

Abstract

A simple model of extra-dimensional radius stabilization in a supersymmetric Randall-Sundrum model is presented. In our model, we introduce only a bulk hypermultiplet and source terms on each boundary branes. With an appropriate choice of model parameters, we find that the radius can be stabilized by supersymmetric vacuum conditions. Since the radion mass can be much larger than the gravitino mass and the supersymmetry breaking scale, the radius stability is ensured even with the supersymmetry breaking. We find a parameter region where unwanted scalar masses induced by quantum corrections through the bulk hypermultiplet and a bulk gravity multiplet are suppressed and the anomaly mediation contributions dominate.