World-sheet instantons and the Peccei-Quinn symmetry

Xiao-Gang Wen; Edward Witten

doi:10.1016/0370-2693(86)91587-x

World-sheet instantons and the Peccei-Quinn symmetry

Physics Letters B 166(4): 397-401

Article 1986 English

Abstract

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It is shown that world-sheets violate the Peccie-Quinn symmetries associated with some of the axions that arise in superstring compactification. In the case of unbroken low-energy supersymmetry, the Peccie-Quinn violating operators that arise are D terms of dimension six. One remaining axion is unaffected.

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