String-String triality for d=4, Z_2 orbifolds

Abstract

We investigate the perturbative and non-perturbative correspondence of a class of four dimensional dual string constructions with N=4 and N=2 supersymmetry, obtained as Z_2 or Z_2 x Z_2 orbifolds of the type II, heterotic and type I string. In particular, we discuss the heterotic and type I dual of all the symmetric Z_2 x Z_2 orbifolds of the type II string, classified in hep-th/9901123. .

latex, 50 pages, figures, final published version

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• Heterotic/Type II Triality and Instantons on $K_3$
• Rank 48 gauge group in heterotic string
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Cited by in corpus (4)

• Effective Action and Soft Supersymmetry Breaking for Intersecting D-brane Models
• An Entropy-Weighted Sum over Non-Perturbative Vacua
• Entropy, String Theory, and our World
• Combinatorics, observables, and String Theory: part II