Renormalization of gauge-invariant operators and the axial anomaly

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Title:	Renormalization of gauge-invariant operators and the axial anomaly
Author:	Espriu, D. (Domènec)
Other authors:	Universitat de Barcelona
Abstract:	The renormalization properties of gauge-invariant composite operators that vanish when the classical equations of motion are used (class II^a operators) and which lead to diagrams where the Adler-Bell-Jackiw anomaly occurs are discussed. It is shown that gauge-invariant operators of this kind do need, in general, nonvanishing gauge-invariant (class I) counterterms.
Subject(s):	-Teoria de camps (Física) -Renormalització (Física) -Partícules (Matèria) -Field theory (Physics) -Renormalization (Physics) -Particles
Rights:	(c) The American Physical Society, 1983
Document type:	Article Article - Published version
Published by:	The American Physical Society
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