General Gauge Invariance of Massive Electrodynamics and the Existence of a Massless Scalar Particle
- 10 May 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 138 (3B), B698-B702
- https://doi.org/10.1103/physrev.138.b698
Abstract
We have formulated a theory of massive electrodynamics which admits gauge invariance of the second kind. In so doing, a massless scalar field is needed. However, if the conserved-current condition is satisfied, this scalar field has no dynamical consequences. This theory then reduces to the conventional theory. When the conserved-current condition is not satisfied, a generalized current must still be conserved in order to have consistency of the theory. In an addendum, a brief discussion of the generalized Stueckelberg formulation is given.
Keywords
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