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Paper IPM / Physic / 7156  


Abstract:  
In this paper we investigate about several configurations of two intersecting branes at arbitrary angles. We choose the viewpoint of a brane source and a brane probe and use the lowenergy dynamics of pbranes. For each pbrane this dynamics is governed by a generic DBI action including a WZ term, which couples to the SUGRA background of the other brane. The analysis naturally reveals two types of configurations: the "marginal" and the "nonmarginal" ones. We specify possible configurations for a pair of similar or nonsimilar branes in either of these two categories. In particular, for two similar branes at angles, this analysis reveals that all the marginal configurations are specified by SU(2) angles while the nonmarginal configurations are specified by Sp(2) angles. On the other hand, we find that no other configuration of two intersecting branes at nontrivial angles can be constructed out of flat pbranes. So in particular, two nonsimilar branes can only be found in an orthogonal configuration. In this case the intersection rules for either of the marginal or nonmarginal configurations are derived, which thereby provide interpretations for the known results from supergravity.
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