Espriu, D. (Domènec)2010-05-062010-05-0619830556-2821https://hdl.handle.net/2445/12528The 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.5 p.application/pdfeng(c) The American Physical Society, 1983Teoria de camps (Física)Renormalització (Física)Partícules (Matèria)Field theory (Physics)Renormalization (Physics)Particlesinfo:eu-repo/semantics/article60678info:eu-repo/semantics/openAccess