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We investigate the Cabbibo-Ferrari, two potential approach to magnetic chargecoupled to two different complex scalar fields, $\Phi_1$ and $\Phi_2$, eachhaving different electric and magnetic charges. The scalar field, $\Phi_1$, isassumed to have a spontaneous symmetry breaking self interaction potentialwhich gives a mass to the "magnetic" gauge potential and "magnetic" photon,while the other "electric" gauge potential and "electric" photon remainmassless. The magnetic photon is hidden until one reaches energies of the orderof the magnetic photon rest mass. The second scalar field, $\Phi _2$, isrequired in order to make the theory non-trivial. With only one field one canalways use a duality rotation to rotate away either the electric or magneticcharge, and thus decouple either the associated electric or magnetic photon. Inanalyzing this system of two scalar fields in the Cabbibo-Ferrari approach weperform several duality and gauge transformations, which require introducingnon-Dirac conditions on the initial electric and magnetic charges. We also findthat due to the symmetry breaking the usual Dirac condition is altered toinclude the mass of the magnetic photon. We discuss the implications of thesevarious conditions on the charges.

Dirac and non-Dirac conditions in the 2-potential theory of magnetic charge