Divergences in Non-Commutative Gauge Theories with the Slavnov Term

The divergence structure of non-commutative gauge theories with a Slavnov extension is examined at one-loop level. As a result of such an extension the photon propagator shows a new transversality with respect to infrared divergent terms emerging from radiative one-loop self-energy corrections. We s...

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Detalles Bibliográficos
Autores principales: Blaschke, D.N., Hohenegger, S., Schweda, M.
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2005/11/041
http://cds.cern.ch/record/895830
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author Blaschke, D.N.
Hohenegger, S.
Schweda, M.
author_facet Blaschke, D.N.
Hohenegger, S.
Schweda, M.
author_sort Blaschke, D.N.
collection CERN
description The divergence structure of non-commutative gauge theories with a Slavnov extension is examined at one-loop level. As a result of such an extension the photon propagator shows a new transversality with respect to infrared divergent terms emerging from radiative one-loop self-energy corrections. We show that due to this extension, the IR divergences merely change their forefactor and remain gauge independent, but in addition new UV divergences appear. We then examine two explicit models with couplings to fermions and scalar fields.
id cern-895830
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
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spelling cern-8958302023-03-14T18:10:58Zdoi:10.1088/1126-6708/2005/11/041http://cds.cern.ch/record/895830engBlaschke, D.N.Hohenegger, S.Schweda, M.Divergences in Non-Commutative Gauge Theories with the Slavnov TermParticle Physics - TheoryThe divergence structure of non-commutative gauge theories with a Slavnov extension is examined at one-loop level. As a result of such an extension the photon propagator shows a new transversality with respect to infrared divergent terms emerging from radiative one-loop self-energy corrections. We show that due to this extension, the IR divergences merely change their forefactor and remain gauge independent, but in addition new UV divergences appear. We then examine two explicit models with couplings to fermions and scalar fields.The divergence structure of non-commutative gauge field theories (NCGFT) with a Slavnov extension is examined at one-loop level with main focus on the gauge boson self-energy. Using an interpolating gauge we show that even with this extension the quadratic IR divergence of the gauge boson self-energy is independent from a covariant gauge fixing as well as from an axial gauge. The proposal of Slavnov is based on the fact that the photon propagator shows a new transversality condition with respect to the IR dangerous terms. This novel transversality is implemented with the help of a new dynamical multiplier field. However, one expects that in physical observables such contributions disappear. A further new feature is the existence of new UV divergences compatible with the gauge invariance (BRST symmetry). We then examine two explicit models with couplings to fermions and scalar fields.hep-th/0510100CERN-PH-TH-2005-185CERN-PH-TH-2005-185oai:cds.cern.ch:8958302005-10-12
spellingShingle Particle Physics - Theory
Blaschke, D.N.
Hohenegger, S.
Schweda, M.
Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title_full Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title_fullStr Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title_full_unstemmed Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title_short Divergences in Non-Commutative Gauge Theories with the Slavnov Term
title_sort divergences in non-commutative gauge theories with the slavnov term
topic Particle Physics - Theory
url https://dx.doi.org/10.1088/1126-6708/2005/11/041
http://cds.cern.ch/record/895830
work_keys_str_mv AT blaschkedn divergencesinnoncommutativegaugetheorieswiththeslavnovterm
AT hoheneggers divergencesinnoncommutativegaugetheorieswiththeslavnovterm
AT schwedam divergencesinnoncommutativegaugetheorieswiththeslavnovterm

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