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arXiv · hep-th/9505025

U-Duality and Integral Structures

Paul S. Aspinwall·David R. Morrison
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Abstract

We analyze the U-duality group for the case of a type II superstring compactified to four dimensions on a K3 surface times a torus. The various limits of this theory are considered which have interpretations as type IIA and IIB superstrings, the heterotic string, and eleven-dimensional supergravity, allowing all these theories to be directly related to each other. The integral structure which appears in the Ramond-Ramond sector of the type II superstring is related to the quantum cohomology of general Calabi-Yau threefolds which allows the moduli space of type II superstring compactifications on Calabi-Yau manifolds to be analyzed.

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Paul S. Aspinwall, David R. Morrison. 1995-05-16. U-Duality and Integral Structures. https://doi.org/10.1016/0370-2693(95)00745-7

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