... Uficompletely describes the effect of scattering, irrespective of the initial spin orpolarization state.5. The Real Dirac Theory. To find a representation of the Dirac theory in terms of the STA, we begin ... deeper theory. Perhaps the most significantclue brought to light by the real formulation of the Diric theory is the fact that the generator of electromagnetic gauge transformations in the Dirac ... interpretation of Ω. If Ω can be given a purely mechanical interpretation, then the Dirac theory can be unified with the rigid body theory. Otherwise, the theories merely stand instrong mathematical...