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Anomalies via dimensional regularization
journal contribution
posted on 2023-05-18, 05:26 authored by Akyeampong, DA, Robert DelbourgoRobert DelbourgoAnomalous Ward identities arise when the Lagrangian in 2l-dimensional space-time is not invariant under the symmetry transformation in question withl arbitrary. (The anomalous symmetry-breaking terms have associated a factor 2l–4 and disappear at the classical level in four dimensions.) In particular, the axial anomaly is connected with the chiral breaking due to the fermion kinetic energy and the canonical trace anomaly is a consequence of dilatation non-invariance of any interaction.
History
Publication title
Nuovo Cimento AVolume
19Pagination
219-224ISSN
0369-3546Department/School
School of Natural SciencesPlace of publication
ItalyRepository Status
- Restricted