Abstract
A geometrical formulation of electrodynamics is presented. This formulation is based on a nonlinear constraint for the electromagnetic potential. As a consequence of the constraint, a three-dimensional photon field is associated with the co-ordinates of a symmetric space of constant negative curvature. A formalism covariant under general co-ordinate transformations is constructed and extended, in a manner analogous to that used in general relativity, to include spinor realizations. A generally covariant Lagrangian density is exhibited and shown to be equivalent, by a suitable redefinition of the fields, to the usual electrodynamics. In such an approach a close relationship between Lorentz invariance and the electromagnetic interaction is manifest.
Published Version
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