Universal regularizations. IV. Compensations of diagrams in Ward identities
Teoretičeskaâ i matematičeskaâ fizika, Tome 108 (1996) no. 2, pp. 249-275
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On the diagram level we describe the mechanism of compensations in Ward identities for non-Abelian gauge theories. The description of this mechanism allows one to analyze the non-Lagrangian regularizations. We propose the version of regularization from the class of “universal” regularizations which keeps the gauge invariance in one-loop approximation and in two-loop approximation, at least for polarization operator.
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