Electromagnetic self interaction in strings

To facilitate the treatment of electromagnetic effects in applications such as dynamically perturbed vortons, this work employs a covariantly formulated string-source Green measure to obtain a coherent relativistic scheme for describing the self interaction of electromagnetic currents in string models of a very general kind, at leading order in the relevant field gradients, using a regularised gradient operator given by <(del)over cap>(v) = <(del)over bar>(v) + 1/2K(v) where <(del)over bar>(v) is the usual tangential gradient operator and K-v is the extrinsic curvature vector. (C) 1997 Elsevier Science B.V.