Gauge Invariant Cutoff QED

Details Gauge Invariant Cutoff QED Gauge Invariant Cutoff QED

2011-08-16

arxiv.org/abs/1108.3215v1

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 2 figures

Scientific paper

A hidden generalized gauge symmetry of a cutoff QED is used to show the
renormalizability of QED. In particular, it is shown that corresponding Ward
identities are valid all along the renormalization group flow. We also derive
the corresponding exact RG flow equation of the effective average action for a
cutoff lambda*phi^4 theory. Generalization to any gauge group is indicated.

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