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arXiv · hep-th/9912151

Open string instantons and superpotentials

Shamit Kachru·Sheldon Katz·Albion Lawrence·John McGreevy
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Abstract

We study the F-terms in N=1 supersymmetric, d=4 gauge theories arising from D(p+3)-branes wrapping supersymmetric p-cycles in a Calabi-Yau threefold. If p is even the spectrum and superpotential for a single brane are determined by purely classical ($α^\prime \to 0$) considerations. If p=3, superpotentials for massless modes are forbidden to all orders in $α^\prime$ and may only be generated by open string instantons. For this latter case we find that such instanton effects are generically present. Mirror symmetry relates even and odd p and thus perturbative and nonperturbative superpotentials; we provide a preliminary discussion of a class of examples of such mirror pairs.

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Shamit Kachru, Sheldon Katz, Albion Lawrence, John McGreevy. 2000-01-04. Open string instantons and superpotentials. https://doi.org/10.1103/physrevd.62.026001

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