Geodesic
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. 
@article{TMF_1996_108_2_a4,
     author = {O. I. Zavialov and A. M. Malokostov},
     title = {Universal regularizations. {IV.~Compensations} of diagrams in {Ward} identities},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {249--275},
     publisher = {mathdoc},
     volume = {108},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1996_108_2_a4/}
}
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O. I. Zavialov; A. M. Malokostov. Universal regularizations. IV.~Compensations of diagrams in Ward identities. Teoretičeskaâ i matematičeskaâ fizika, Tome 108 (1996) no. 2, pp. 249-275. http://geodesic.mathdoc.fr/item/TMF_1996_108_2_a4/