Brane mapping under (−1) FL

Abstract

We present the evidence that (−1) F L is a nonperturbative symmetry of Type II string theory. We argue that (−1) F L is a symmetry of string theory as much as the SL(2, Z) of the Type II string is and how the branes are mapped under the (−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 D p-branes (bound with anti-D p branes) are mapped to unstable nonsupersymmetric D p-branes, which has D( p−1)-branes as kink solutions according to Horava [Type IIA D-branes, K Theory, And Matrix Theory, hep-th/9812135].