Exponential Hierarchy From Spacetime Variable String Vacua
P. Berglund, T. Hubsch, D. Minic

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).
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