Gauge invariance, background fields and modified ward identities

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 auxilia...

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Hauptverfasser: Freire, Filipe (VerfasserIn) , Litim, Daniel F. (VerfasserIn) , Pawlowski, Jan M. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2001
In: International journal of modern physics. A, Particles and fields, gravitation, cosmology
Year: 2001, Jahrgang: 16, Heft: 11, Pages: 2035-2040
ISSN:1793-656X
DOI:10.1142/S0217751X01004669
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1142/S0217751X01004669
Verlag, Volltext: http://www.worldscientific.com/doi/abs/10.1142/S0217751X01004669
Volltext
Verfasserangaben:F. Freire, D.F. Litim, J.M. Pawlowski

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520 |a 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. 
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