Gauge invariance, background fields and modified Ward identities

Freire, F. and Litim, D. F. and Pawlowski, J. M. (2001) Gauge invariance, background fields and modified Ward identities. (Preprint)

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Abstract

In this talk the gauge symmetry for Wilsonian flows in pure Yang-Mills theories is discussed. The background field formalism is used for the construction of a gauge invariant effective action. The symmetries of the effective action under gauge transformations for both the gauge field and the auxiliary background field are separately evaluated. Modified Ward-Takahashi and background field identities are used in my study. Finally it is shown how the symmetry properties of the full theory are restored in the limit where the cut-off is removed.

Item Type:	Article
Divisions:	School of Theoretical Physics > Preprints
Date Deposited:	19 Jun 2018 13:55
Last Modified:	20 Dec 2022 09:02
URI:	https://dair.dias.ie/id/eprint/595

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