Non-local gauge-invariant regularization and Ward identity anomalies

A gauge-invariant regularization of a massive spinor field interacting with external scalar, pseudoscalar, vector and axial fields is found. It is based on epsilon separating the vertices in the total Lagrangian. Rules for its use are deduced and Ward identities are written. Anomalies, present only...

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Detalles Bibliográficos
Autores principales: Becchi, C, Velo, G
Lenguaje:eng
Publicado: 1973
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(73)90577-4
http://cds.cern.ch/record/880800
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author Becchi, C
Velo, G
author_facet Becchi, C
Velo, G
author_sort Becchi, C
collection CERN
description A gauge-invariant regularization of a massive spinor field interacting with external scalar, pseudoscalar, vector and axial fields is found. It is based on epsilon separating the vertices in the total Lagrangian. Rules for its use are deduced and Ward identities are written. Anomalies, present only in the divergence of the axial current, are interpreted as the high-energy contribution of the integrals associated with some loops. They can be computed in a simple way, confirming Bardeen's result. (8 refs).
id cern-880800
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1973
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spelling cern-8808002019-09-30T06:29:59Zdoi:10.1016/0550-3213(73)90577-4http://cds.cern.ch/record/880800engBecchi, CVelo, GNon-local gauge-invariant regularization and Ward identity anomaliesParticle Physics - TheoryA gauge-invariant regularization of a massive spinor field interacting with external scalar, pseudoscalar, vector and axial fields is found. It is based on epsilon separating the vertices in the total Lagrangian. Rules for its use are deduced and Ward identities are written. Anomalies, present only in the divergence of the axial current, are interpreted as the high-energy contribution of the integrals associated with some loops. They can be computed in a simple way, confirming Bardeen's result. (8 refs).CERN-TH-1574oai:cds.cern.ch:8808001973
spellingShingle Particle Physics - Theory
Becchi, C
Velo, G
Non-local gauge-invariant regularization and Ward identity anomalies
title Non-local gauge-invariant regularization and Ward identity anomalies
title_full Non-local gauge-invariant regularization and Ward identity anomalies
title_fullStr Non-local gauge-invariant regularization and Ward identity anomalies
title_full_unstemmed Non-local gauge-invariant regularization and Ward identity anomalies
title_short Non-local gauge-invariant regularization and Ward identity anomalies
title_sort non-local gauge-invariant regularization and ward identity anomalies
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/0550-3213(73)90577-4
http://cds.cern.ch/record/880800
work_keys_str_mv AT becchic nonlocalgaugeinvariantregularizationandwardidentityanomalies
AT velog nonlocalgaugeinvariantregularizationandwardidentityanomalies

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