N=2 Type I-Heterotic Duality and Higher Derivative F-Terms
arXiv:hep-th/9611017 · doi:10.1016/S0370-2693(96)01665-6
Abstract
We test the conjectured Type I-Heterotic Duality in four dimensions by analyzing a given class of higher derivative F-terms of the form , with W the N=2 gravitational superfield. We study a particular dual pair of theories, the O(2,2) heterotic model and a type I model based on the K3 orbifold theory constructed by Gimon and Polchinski, further compactified on a torus. The couplings appear at 1-loop on both theories; because of the weak-weak nature of this duality in four dimensions, it is meaningful to compare the heterotic 's with the corresponding type I couplings perturbatively. We compute the 's in type I, showing that they receive contributions only from N=2 BPS states and that in the appropriate limit they coincide with the heterotic couplings, in agreement with the given duality.
latex file, 11 pages, no figures, minor corrections and Möbius strip contribution included
References in corpus (3)
Cited by in corpus (15)
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