Gauge Symmetry and Supersymmetry Breaking From Intersecting Branes
Abstract
We study a system of intersecting NS and D-branes in type IIA string theory in R9,1. We show that the 3+1 dimensional non-supersymmetric theory at the intersection has unstable vacua which are long-lived in some regions of the parameter space of brane configurations, and disappear in others. We also comment on the relation of our construction to systems of D and anti D-branes wrapped around cycles of non-compact Calabi-Yau manifolds and to other related systems.
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