Derivation of relativistic charge-monopole and monopole-monopole potentials from field theory

Abstract

Relativistic potentials (generalizing the Breit-potential of quantum electrodynamics) between spin 1 2 - electric and magnetic charges are presented, each monopole g j having its own singularity-string along some direction n j. The monopole potentials involve integrations along the singularities. By using suitable gauge transformations and limiting procedures a simple form of the potential independent of n j is derived, if the string connects two monopoles.