Radius stabilization in 5D SUGRA models on orbifold

TL;DR

This paper investigates how to stabilize the size of the extra dimension in 5D supergravity models compactified on an orbifold, analyzing the vacuum structure and moduli stabilization mechanisms.

Contribution

It provides a unified effective theory framework for various 5D models, including heterotic M-theory and Randall-Sundrum, focusing on radius stabilization.

Findings

Identification of conditions for stable moduli

Analysis of vacuum structure in the effective theory

Connection between different 5D models via gauging parameters

Abstract

We study a four-dimensional effective theory of the five-dimensional (5D) gauged supergravity with a universal hypermultiplet and perturbative superpotential terms at the orbifold fixed points. The class of models we consider includes the 5D heterotic M-theory and the supersymmetric Randall-Sundrum model as special limits of the gauging parameters. We analyse the vacuum structure of the models, especially the nature of the moduli stabilization, from the viewpoint of the effective theory.