Abstract
A semiclassical understanding of the anomalies of the axial singlet and nonsinglet currents in massless QCD (coupled to an external adiabatically turned on electromagnetic field) is developed. In particular, it is clarified how these anomalies manifest themselves in the context of spontaneous symmetry breaking. For the nonsinglet current the anomaly manifests itself as a final coherent state of massless pions; for the singlet current it is argued that there is a cancellation between the gluonic and electromagnetic contributions to the anomaly, which is verified explicitly using the 1/N expansion.
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