Universality of radiative corrections to gauge couplings for strings with spontaneously broken supersymmetry

Abstract

I review recent work on computing radiative corrections to non-abelian gauge couplings in four-dimensional heterotic vacua with spontaneously broken supersymmetry. The prototype models can be considered as K3 surfaces with additional Scherk-Schwarz fluxes inducing the spontaneous $\mathcal{N}=2\to \mathcal{N}=0$ breaking. Remarkably, although the gauge thresholds are no longer BPS protected and receive contributions also from the excitations of the RNS sector, their difference is still exactly computable and universal. Based on a talk presented at the DISCRETE 2014 conference at King's College London.

18 pages, corrected eq. 4.16 and an overall factor of 2

References in corpus (8)

• Towards a Non-Supersymmetric String Phenomenology
• Non-supersymmetric heterotic model building
• Universality of Gauge Thresholds in Non-Supersymmetric Heterotic Vacua
• An Alternative for Moduli Stabilisation
• Resolution of Hagedorn singularity in superstrings with gravito-magnetic fluxes
• Marginal Deformations of Vacua with Massive boson-fermion Degeneracy Symmetry
• Orbifold Symmetry Reductions of Massive Boson-Fermion Degeneracy
• Threshold corrections, generalised prepotentials and Eichler integrals

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• Chiral Heterotic Strings with Positive Cosmological Constant
• Non-Tachyonic Semi-Realistic Non-Supersymmetric Heterotic String Vacua
• GUT Precursors and Entwined SUSY: The Phenomenology of Stable Non-Supersymmetric Strings
• A Solution to the Decompactification Problem in Chiral Heterotic Strings
• Gravitational Threshold Corrections in Non-Supersymmetric Heterotic Strings
• Calabi-Yau compactifications of non-supersymmetric heterotic string theory