Moduli Dependence of One--Loop Gauge Couplings in (0,2) Compactifications

Details Moduli Dependence of One--Loop Gauge Couplings in (0,2) Compactifications Moduli Dependence of One--Loop Gauge Couplings in (0,2) Compactifications

1995-04-25

arxiv.org/abs/hep-th/9504129v1

Phys.Lett. B355 (1995) 107-116

Physics

High Energy Physics

High Energy Physics - Theory

12 pages and 1 figure

Scientific paper

10.1016/0370-2693(95)00683-C

We derive the moduli dependence of the one--loop gauge couplings for non--vanishing gauge background fields in a four--dimensional heterotic (0,2) string compactification. Remarkably, these functions turn out to have a representation as modular functions on an auxiliary Riemann surface on appropriate truncations of the full moduli space. In particular, a certain kind of one--loop functions is given by the free energy of two--dimensional solitons on this surface.

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