Abstract
We compute the one-loop threshold corrections to the gauge and gravitational couplings for a large class of \( \mathcal{N}=2 \) non-Kähler heterotic compactifications with three-form flux, consisting in principal two-torus bundles over K3 surfaces. We obtain the results as sums of BPS-states contributions, depending on the topological data of the bundle. We analyse also the worldsheet non-perturbative corrections coming from instantons wrapping the torus fiber, that are mapped under S-duality to D-instanton corrections in type I flux compactifications.
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ArXiv ePrint: 1611.09442
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Angelantonj, C., Israël, D. & Sarkis, M. Threshold corrections in heterotic flux compactifications. J. High Energ. Phys. 2017, 32 (2017). https://doi.org/10.1007/JHEP08(2017)032
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DOI: https://doi.org/10.1007/JHEP08(2017)032