Adler-Bardeen theorem and cancellation of gauge anomalies to all orders in nonrenormalizable theories
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منابع مشابه
Anomalies in Quantum Field Theory Properties and Characterization
We consider the Adler-Bardeen anomaly of the U (1) axial current in abelian and non-abelian gauge theories and present its algebraic characterization as well as an explicit evaluation proving regularization scheme independence of the anomaly. By extending the gauge coupling to an external space-time dependent field we get a unique definition for the quantum corrections of the topological term. ...
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1.1 Anomalies in QFT. The chiral anomaly appears as a quantum correction to the conservation of the axial current for massless fermions. A crucial property is the anomaly nonrenormalization, which says that the chiral anomaly is given exactly by its lower order contribution. This property was proved first for QED4 in [AB] in the well known Adler-Bardeen Theorem: it was shown that there is a dra...
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تاریخ انتشار 2015