Gauge invariance of massless QED
arXiv:hep-ph/9403399 · doi:10.1016/0370-2693(94)91545-8
Abstract
A simple general proof of gauge invariance in QED is given in the framework of causal perturbation theory. It illustrates a method which can also be used in non-abelian gauge theories.
arXiv comment7 pages, TEX-file, Zuerich University Preprint ZU-TH-33/1993
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- Ward Identities and Renormalization of General Gauge Theories
- Comments on the Gauge Fixed BRST Cohomology and the Quantum Noether Method
- The Renormalization of the Non-Abelian Gauge Theories in the Causal Approach