Radion stabilization with(out) Gauss-Bonnet interactions and inflation

TL;DR

This paper investigates how Gauss-Bonnet interactions affect radion stabilization in 5D brane models, analyzing stability conditions, radion mass, and inter-brane distance, with implications for cosmology and inflation.

Contribution

It provides a detailed analysis of radion stabilization with Gauss-Bonnet terms, including stability criteria and effects on radion properties in inflating backgrounds.

Findings

Gauss-Bonnet interactions modify radion mass and inter-brane distance.

Stability conditions are derived for static brane configurations.

Numerical examples illustrate the influence of Gauss-Bonnet terms.

Abstract

Radion stabilization is analyzed in 5-dimensional models with branes in the presence of Gauss-Bonnet interactions. The Goldberger-Wise mechanism is considered for static and inflating backgrounds. The necessary and sufficient conditions for stability are given for the static case. The influence of the Gauss-Bonnet term on the radion mass and the inter-brane distance is analyzed and illustrated by numerical examples. The interplay between the radion stabilization and the cosmological constant problem is discussed.