Universal regularizations. IV. Compensations of diagrams in Ward identities

O. I. Zavialov, A. M. Malokostov

Steklov Mathematical Institute, Russian Academy of Sciences

Abstract: 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.

Received: 14.11.1995

DOI: 10.4213/tmf1189

 English version: Theoretical and Mathematical Physics, 1996, 108:2, 1046–1068

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