Effective Superpotentials for Compact D5-Brane Calabi-Yau Geometries |
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Authors: | Hans Jockers and Masoud Soroush |
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Institution: | (1) Department of Physics, Stanford University, Stanford, CA 94305-4060, USA |
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Abstract: | For compact Calabi-Yau geometries with D5-branes we study N = 1 effective superpotentials depending on both open- and closed-string fields. We develop methods to derive the open/closed
Picard-Fuchs differential equations, which control D5-brane deformations as well as complex structure deformations of the
compact Calabi-Yau space. Their solutions encode the flat open/closed coordinates and the effective superpotential. For two
explicit examples of compact D5-brane Calabi-Yau hypersurface geometries we apply our techniques and express the calculated
superpotentials in terms of flat open/closed coordinates. By evaluating these superpotentials at their critical points we
reproduce the domain wall tensions that have recently appeared in the literature. Finally we extract orbifold disk invariants
from the superpotentials, which, up to overall numerical normalizations, correspond to orbifold disk Gromov-Witten invariants
in the mirror geometry. |
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