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Stability and BPS branes

Michael R. Douglas, Bartomeu Fiol, Christian Römelsberger

hep-tharXiv:hep-th/0002037

Abstract

We define the concept of Pi-stability, a generalization of mu-stability of vector bundles, and argue that it characterizes N=1 supersymmetric brane configurations and BPS states in very general string theory compactifications with N=2 supersymmetry in four dimensions.

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