Exponential Hierarchy From Spacetime Variable String Vacua

TL;DR

This paper demonstrates that non-supersymmetric string vacua with spacetime variation can naturally produce an exponential hierarchy between the electroweak and gravitational scales, with a string coupling of order one.

Contribution

It introduces a mechanism where spacetime variable string vacua generate an exponential hierarchy without requiring small parameters.

Findings

Exponential hierarchy achieved from non-supersymmetric vacua.

Hierarchy generated with string coupling of order one.

Potential implications for fundamental scale separation.

Abstract

It is shown that non-supersymmetric spacetime varying string vacua can lead to an exponential hierarchy between the electroweak and the gravitational scales. The hierarchy is naturally generated by a string coupling of O(1).