Topological effects in QCD and the problem of short-distance singularities

The topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the cor...

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Detalles Bibliográficos
Autor principal: Lüscher, Martin
Lenguaje:eng
Publicado: 2004
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2004.04.076
http://cds.cern.ch/record/728645
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author Lüscher, Martin
author_facet Lüscher, Martin
author_sort Lüscher, Martin
collection CERN
description The topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the correlation functions is determined by the non-singlet chiral Ward identities, these formulae provide an unambiguous regularization-independent definition of the moments and thus of the charge distribution.
id cern-728645
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
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spelling cern-7286452019-09-30T06:29:59Zdoi:10.1016/j.physletb.2004.04.076http://cds.cern.ch/record/728645engLüscher, MartinTopological effects in QCD and the problem of short-distance singularitiesParticle Physics - TheoryThe topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the correlation functions is determined by the non-singlet chiral Ward identities, these formulae provide an unambiguous regularization-independent definition of the moments and thus of the charge distribution.hep-th/0404034CERN-PH-TH-2004-062oai:cds.cern.ch:7286452004-04-05
spellingShingle Particle Physics - Theory
Lüscher, Martin
Topological effects in QCD and the problem of short-distance singularities
title Topological effects in QCD and the problem of short-distance singularities
title_full Topological effects in QCD and the problem of short-distance singularities
title_fullStr Topological effects in QCD and the problem of short-distance singularities
title_full_unstemmed Topological effects in QCD and the problem of short-distance singularities
title_short Topological effects in QCD and the problem of short-distance singularities
title_sort topological effects in qcd and the problem of short-distance singularities
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/j.physletb.2004.04.076
http://cds.cern.ch/record/728645
work_keys_str_mv AT luschermartin topologicaleffectsinqcdandtheproblemofshortdistancesingularities

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