Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings

Details Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings

1992-04-13

arxiv.org/abs/hep-th/9204030v2

Nucl.Phys. B383 (1992) 93-109

Physics

High Energy Physics

High Energy Physics - Theory

19 pages

Scientific paper

10.1016/0550-3213(92)90672-X

We study one-loop, moduli-dependent corrections to gauge and gravitational couplings in supersymmetric vacua of the heterotic string. By exploiting their relation to the integrability condition for the associated CP-odd couplings, we derive general expressions for them, both for $(2,2)$ and $(2,0)$ models, in terms of tree level four-point functions in the internal $N=2$ superconformal theory. The $(2,2)$ case, in particular symmetric orbifolds, is discussed in detail.

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