D3-brane intersecting with dyonic BIon
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The Born--Infeld theory of a D3-brane intersecting with(p,q) strings is reconsidered. From the assumption that the electromagnetic fields are those of a dyon, and using the kappa invariance of the action, the explicit scalar field and its charge are derived. Considering perturbations orthogonal to both branes, the SL(2,Z)-invariant S-matrix is obtained. Owing to the selfduality of the brane the latter can be evaluated explicitly in both high and low energy regions.
LaTex, 14 pages, no figures
LaTex, 14 pages, no figures