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Renormalization of gauge-invariant operators and the axial anomaly

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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.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.28.349

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Renormalization of gauge-invariant operators and the axial anomaly