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arXiv · hep-ph/9403399

Gauge invariance of massless QED

Michael Duetsch·Tobias Hurth·Guenter Scharf
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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.

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Michael Duetsch, Tobias Hurth, Guenter Scharf. 1994-03-30. Gauge invariance of massless QED. https://doi.org/10.1016/0370-2693(94)91545-8

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