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On Gauge Invariance and Ward Identities for the Wilsonian Renormalisation Group

Daniel F. Litim·Jan M. Pawlowski
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Abstract

We investigate non-Abelian gauge theories within a Wilsonian Renormalisation Group approach. The cut-off term inherent in this approach leads to a modified Ward identity (mWI). It is shown that this mWI is compatible with the flow and that the full effective action satisfies the usual Ward identity (WI). The universal 1-loop beta-function is derived within this approach and the extension to the 2-loop level is briefly outlined.

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Daniel F. Litim, Jan M. Pawlowski. 1998-09-03. On Gauge Invariance and Ward Identities for the Wilsonian Renormalisation Group. https://doi.org/10.1016/s0920-5632(99)00187-5

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