Some new results in O(a) improved lattice QCD

It is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. These are derived from the QCD Schrödinger functional which enables us to...

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Detalles Bibliográficos
Autores principales: Luscher, Martin, Sint, Stefan, Sommer, Rainer, Weisz, Peter, Wittig, Hartmut, Wolff, Ulli
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.1016/S0920-5632(96)00815-8
http://cds.cern.ch/record/308518
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author Luscher, Martin
Sint, Stefan
Sommer, Rainer
Weisz, Peter
Wittig, Hartmut
Wolff, Ulli
author_facet Luscher, Martin
Sint, Stefan
Sommer, Rainer
Weisz, Peter
Wittig, Hartmut
Wolff, Ulli
author_sort Luscher, Martin
collection CERN
description It is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. These are derived from the QCD Schrödinger functional which enables us to simulate directly at vanishing quark masses. In the quenched approximation and for bare couplings in the range $0\leq g_0\leq 1$, we determine the improved action, the improved axial current, the additive renormalization of the quark mass and the isospin current normalization constants Z_A and Z_V.
id cern-308518
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
record_format invenio
spelling cern-3085182023-03-14T20:33:03Zdoi:10.1016/S0920-5632(96)00815-8http://cds.cern.ch/record/308518engLuscher, MartinSint, StefanSommer, RainerWeisz, PeterWittig, HartmutWolff, UlliSome new results in O(a) improved lattice QCDParticle Physics - LatticeIt is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. These are derived from the QCD Schrödinger functional which enables us to simulate directly at vanishing quark masses. In the quenched approximation and for bare couplings in the range $0\leq g_0\leq 1$, we determine the improved action, the improved axial current, the additive renormalization of the quark mass and the isospin current normalization constants Z_A and Z_V.It is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. These are derived from the QCD Schr\"odinger functional which enables us to simulate directly at vanishing quark masses. In the quenched approximation and for bare couplings in the range $0\leq g_0\leq 1$, we determine the improved action, the improved axial current, the additive renormalization of the quark mass and the isospin current normalization constants Z_A and Z_V.hep-lat/9608049DESY-96-157CERN-TH-96-217DESY-96-157CERN-TH-96-217oai:cds.cern.ch:3085181996-08-09
spellingShingle Particle Physics - Lattice
Luscher, Martin
Sint, Stefan
Sommer, Rainer
Weisz, Peter
Wittig, Hartmut
Wolff, Ulli
Some new results in O(a) improved lattice QCD
title Some new results in O(a) improved lattice QCD
title_full Some new results in O(a) improved lattice QCD
title_fullStr Some new results in O(a) improved lattice QCD
title_full_unstemmed Some new results in O(a) improved lattice QCD
title_short Some new results in O(a) improved lattice QCD
title_sort some new results in o(a) improved lattice qcd
topic Particle Physics - Lattice
url https://dx.doi.org/10.1016/S0920-5632(96)00815-8
http://cds.cern.ch/record/308518
work_keys_str_mv AT luschermartin somenewresultsinoaimprovedlatticeqcd
AT sintstefan somenewresultsinoaimprovedlatticeqcd
AT sommerrainer somenewresultsinoaimprovedlatticeqcd
AT weiszpeter somenewresultsinoaimprovedlatticeqcd
AT wittighartmut somenewresultsinoaimprovedlatticeqcd
AT wolffulli somenewresultsinoaimprovedlatticeqcd

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