Open string instantons and superpotentials
- School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)
- Department of Mathematics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)
- Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
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 ({alpha}{sup '}{yields}0) considerations. If p=3, superpotentials for massless modes are forbidden to all orders in {alpha}{sup '} 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. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217153
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 62; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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