Large volume supersymmetry breaking without decompactification problem

Abstract

We consider heterotic string backgrounds in four-dimensional Minkowski space, where N=1 supersymmetry is spontaneously broken at a low scale m_{3/2} by a stringy Scherk-Schwarz mechanism. We review how the effective gauge couplings at 1-loop may evade the "decompactification problem", namely the proportionality of the gauge threshold corrections, with the large volume of the compact space involved in the supersymmetry breaking.

10 pages. Based on a talk given at "Lie theory and its applications in physics (LT-11), Varna, Bulgaria, 15 - 21 June 2015