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arXiv · hep-th/9506048

Moduli Space of CHL Strings

S. Chaudhuri·J. Polchinski
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Abstract

We discuss an orbifold of the toroidally compactified heterotic string which gives a global reduction of the dimension of the moduli space while preserving the supersymmetry. This construction yields the moduli space of the first of a series of reduced rank theories with maximal supersymmetry discovered recently by Chaudhuri, Hockney, and Lykken. Such moduli spaces contain non-simply-laced enhanced symmetry points in any spacetime dimension D<10. Precisely in D=4 the set of allowed gauge groups is invariant under electric-magnetic duality, providing further evidence for S-duality of the D=4 heterotic string.

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S. Chaudhuri, J. Polchinski. 1995-08-15. Moduli Space of CHL Strings. https://doi.org/10.1103/physrevd.52.7168

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