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.

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