Unified model based on U(1) duality symmetry of polarization and magnetization

The exact similarity observed between the external field lines of an electr ic dipole and those due to a magnetic dipole can be explained by a U(1) dua lity symmetry that internally couples the polarization and magnetization so urces. This symmetry provides an approach of performing magnetic calculatio ns by mapping them to electric calculations and vice versa. A classical mod el based on this symmetry, which describes and unifies the external electri c and magnetic fields of material sources, is presented in this paper. This model predicts that an external magnetostatic dipole field is equally well described as originating from a particle possessing a magnetic dipole mome nt or as due to a particle having both electric and magnetic dipole moments . [S1063-651X(98)51112-9].