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Brane/anti-Brane Systems and U(N|M) Supergroup

Cumrun Vafa

hep-tharXiv:hep-th/0101218

Abstract

We show that in the context of topological string theories N branes and M anti-branes give rise to Chern-Simons gauge theory with the gauge supergroup U(N|M). We also identify a deformation of the theory which corresponds to brane/anti-brane annihilation. Furthermore we show that when N=M all open string states are BRST trivial in the deformed theory.

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