Radion effective theory in the detuned Randall-Sundrum model

TL;DR

This paper derives the low-energy effective action for the radion in a detuned Randall-Sundrum model, showing classical stabilization and potential supersymmetry breaking mechanisms.

Contribution

It provides the first computation of the radion effective action in the detuned Randall-Sundrum scenario, including supersymmetric and non-supersymmetric cases.

Findings

Classical potential stabilizes brane separation.

Supersymmetry can be spontaneously broken via graviphoton VEV.

Effective action captures radion dynamics in the model.

Abstract

We compute the two-derivative low-energy effective action for the radion in the (supersymmetric) Randall-Sundrum scenario with detuned brane tensions. At the classical level, a potential automatically stabilizes the distance between the branes. In the supersymmetric case, supersymmetry can be broken spontaneously by a vacuum expectation value for the fifth component of the graviphoton.