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Brane mapping under (βˆ’1)FL(-1)^{F_L}

Abstract

We present the evidence that (βˆ’1)FL(-1)^{F_L} is a nonperturbative symmetry of Type II string theory. We argue that (βˆ’1)FL(-1)^{F_L} is a symmetry of string theory as much as the SL(2,Z)SL(2, Z) of the Type II string is and how the branes are mapped under the (βˆ’1)FL(-1)^{F_L} modding. NS branes are mapped into the NS branes with the same world volume dimensions but with the different chiral structure. Supersymmetric Dp-branes (bound with anti-Dp branes) are mapped to unstable nonsupersymmetric Dp-branes, which has D(p-1)-branes as kink solutions according to Horava.Comment: 6 pages, interpretation of the boundary state mapping in terms of D-branes is clarified and a reference adde

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