| Gauge Anomaly |
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| CATEGORIES ABOUT GAUGE ANOMALY | |
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The anomaly usually appears as a Feynman Diagram with a Chiral Fermion running in the loop (a polygon) with ''n'' external Gauge Boson s attached to the loop where where is the Spacetime dimension. Anomalies only occur in even spacetime dimensions. For example, the anomalies in the usual 4 spacetime dimensions arise from triangle Feynman diagrams. Gauge symmetry is a very important symmetry for the consistency of the whole theory, and therefore all gauge anomalies must cancel out. This indeed happens in the Standard Model . |
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