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Puzzles on the Duality between Heterotic and Type IIA Strings

Mitsuko Abe, Masamichi Sato

hep-tharXiv:hep-th/9904155

Abstract

We discuss the possibility of the extension of the duality between the webs of heterotic string and the type IIA string to Calabi-Yau 3-folds with another K3 fiber by comparing the dual polyhedron of Calabi-Yau 3-folds given by Candelas, Perevalov and Rajesh.

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