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Calabi-Yau Duals for CHL Strings

Shamit Kachru, Albrecht Klemm, Yaron Oz

hep-tharXiv:hep-th/9712035

Abstract

We find M-theory (Type IIA) duals for compactifications of the 9d CHL string to 5d (4d) on K3 (K3 x S1). The IIA duals are Calabi-Yau orbifolds with nontrivial RR U(1) backgrounds turned on.

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