2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50525We 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.10 pages, additional reference includedHigh Energy Physics - Theorytext