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arXiv · hep-th/9204030

Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings

I. Antoniadis·E. Gava·K. S. Narain
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Abstract

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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I. Antoniadis, E. Gava, K. S. Narain. 1992-05-21. Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings. https://doi.org/10.1016/0550-3213(92)90672-x

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