On Gauge Invariance and Ward Identities for the Wilsonian Renormalisation Group

Details On Gauge Invariance and Ward Identities for the Wilsonian Renormalisation Group On Gauge Invariance and Ward Identities for the Wilsonian Renormalisation Group

1998-09-02

arxiv.org/abs/hep-th/9809020v2

Nucl.Phys.Proc.Suppl. 74 (1999) 325-328

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, latex, talk presented by J. M. Pawlowski at QCD 98, Montpellier, July 2-8, 1998; to be published in Nucl. Phys. B (Pr

Scientific paper

10.1016/S0920-5632(99)00187-5

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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