By treating the real Maxwell field and real linearized Einstein equations as being imbedded in complex Minkowski space, one can interpret magnetic moments and spin-angular momentum as arising from a charge and mass monopole source moving along a complex world line in the complex Minkowski space. In the circumstances where the complex center of mass world line coincides with the complex center of charge world line, the gyromagnetic ratio is that of the Dirac electron.

• Received 14 January 2002

DOI:https://doi.org/10.1103/PhysRevD.65.104005