Electric and magnetic interaction of dyonic D-branes and odd spin structure
Matteo Bertolini, Roberto Iengo, Claudio A. Scrucca
Abstract
We present a general description of electromagnetic RR interactions between pairs of magnetically dual D-branes, focusing on the interaction of a magnetically charged brane with an electrically charged one. In the boundary state formalism, it turns out that while the electric-electric and/or magnetic-magnetic interaction corresponds to the usual RR even spin structure, the magnetic-electric interaction is described by the RR odd spin structure. As representative of the generic case of a dual pair of p and 6-p branes, we discuss in detail the case of the self-dual 3-brane wrapped on a T6/Z3, which looks like an extremal dyonic black hole in 4 dimensions.
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