Exponentially Small Supersymmetry Breaking from Extra Dimensions

TL;DR

This paper proposes a mechanism where supersymmetry breaking is exponentially suppressed in models with extra dimensions, using simple free bulk dynamics to address the hierarchy problem.

Contribution

It introduces a novel exponentially small supersymmetry breaking mechanism via extra-dimensional shining, relying on classical bulk dynamics and brane interactions.

Findings

Supersymmetry breaking scale is exponentially small, of order e^{-2 pi R}.

The model naturally stabilizes the extra dimension radius at a large size.

The approach offers a simple solution to the hierarchy problem.

Abstract

The supersymmetric ``shining'' of free massive chiral superfields in extra dimensions from a distant source brane can trigger exponentially small supersymmetry breaking on our brane of order e^{-2 pi R}, where R is the radius of the extra dimensions. This supersymmetry breaking can be transmitted to the superpartners in a number of ways, for instance by gravity or via the standard model gauge interactions. The radius R can easily be stabilized at a size O(10) larger that the fundamental scale. The models are extremely simple, relying only on free, classical bulk dynamics to solve the hierarchy problem.