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Anomalies via dimensional regularization

journal contribution
posted on 2023-05-18, 05:26 authored by Akyeampong, DA, Robert DelbourgoRobert Delbourgo
Anomalous 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 A

Volume

19

Pagination

219-224

ISSN

0369-3546

Department/School

School of Natural Sciences

Place of publication

Italy

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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