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Chern-Simons from Dirichlet 2-brane instantons

Martin O'Loughlin

hep-tharXiv:hep-th/9601179

Abstract

In the vicinity of points in Calabi-Yau moduli space where there are degenerating three-cycles the low energy effective action of type IIA string theory will contain significant contributions arising from membrane instantons that wrap around these three-cycles. We show that the world-volume description of these instantons is Chern-Simons theory.

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