Cutoff effects in twisted mass lattice QCD

We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approxima...

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Detalles Bibliográficos
Autores principales: Della Morte, Michele, Frezzotti, Roberto, Heitger, Jochen, Sint, Stefan
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2001/10/041
http://cds.cern.ch/record/514516
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author Della Morte, Michele
Frezzotti, Roberto
Heitger, Jochen
Sint, Stefan
author_facet Della Morte, Michele
Frezzotti, Roberto
Heitger, Jochen
Sint, Stefan
author_sort Della Morte, Michele
collection CERN
description We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.
id cern-514516
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-5145162023-03-14T18:45:50Zdoi:10.1088/1126-6708/2001/10/041http://cds.cern.ch/record/514516engDella Morte, MicheleFrezzotti, RobertoHeitger, JochenSint, StefanCutoff effects in twisted mass lattice QCDParticle Physics - LatticeWe present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.hep-lat/0108019MS-TP-01-1CERN-TH-2001-224BICOCCA-FT-01-13BICOCCA-FT-2001-13CERN-TH-2001-224MS-TP-2001-1oai:cds.cern.ch:5145162001-08-15
spellingShingle Particle Physics - Lattice
Della Morte, Michele
Frezzotti, Roberto
Heitger, Jochen
Sint, Stefan
Cutoff effects in twisted mass lattice QCD
title Cutoff effects in twisted mass lattice QCD
title_full Cutoff effects in twisted mass lattice QCD
title_fullStr Cutoff effects in twisted mass lattice QCD
title_full_unstemmed Cutoff effects in twisted mass lattice QCD
title_short Cutoff effects in twisted mass lattice QCD
title_sort cutoff effects in twisted mass lattice qcd
topic Particle Physics - Lattice
url https://dx.doi.org/10.1088/1126-6708/2001/10/041
http://cds.cern.ch/record/514516
work_keys_str_mv AT dellamortemichele cutoffeffectsintwistedmasslatticeqcd
AT frezzottiroberto cutoffeffectsintwistedmasslatticeqcd
AT heitgerjochen cutoffeffectsintwistedmasslatticeqcd
AT sintstefan cutoffeffectsintwistedmasslatticeqcd

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