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Quenched spectroscopy with fixed-point and chirally improved fermions

Gattringer, Christof; Gockeler, Meinulf; Hasenfratz, Peter; Hauswirth, Simon; Holland, Kieran; Jorg, Thomas; Juge, Keisuke J.; Lang, C.B.; Niedermayer, Ferenc; Rakow, P.E.L.; Schaefer, Stefan and Schafer, Andreas (2004) Quenched spectroscopy with fixed-point and chirally improved fermions. Nuclear Physics B, 677 (1-2). pp. 3-51. ISSN 0550-3213

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Cited 57 times in WoS

Abstract

We present results from quenched spectroscopy calculations with the parametrized fixed-point and the chirally improved Dirac operators. Both these operators are approximate solutions of the Ginsparg-Wilson equation and have good chiral properties. This allows us to work at small quark masses and we explore pseudoscalar-mass to vector-mass ratios down to 0.28. We discuss meson and baryon masses, their scaling properties, finite volume effects and compare our results with recent large scale simulations. We find that the size of quenching artifacts of the masses is strongly correlated with their experimentally observed widths and that the gauge and hadronic scales are consistent.

Item Type:Article
Additional Information:LTH 599. arXiv Number: arXiv:hep-lat/0307013v3. Available online 21 November 2003. Issue: 19 January 2004.
Uncontrolled Keywords:GINSPARG-WILSON FERMIONS; LATTICE GAUGE-THEORIES; LIGHT HADRON SPECTRUM; DOMAIN-WALL FERMIONS; PERTURBATION-THEORY; OVERLAP FERMIONS; QCD; QUARKS; CONSTRUCTION; SYMMETRY
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1016/j.nuclphysb.2003.10.044
Related URLs:
Refereed:Yes
Status:Published
ID Code:504
Deposited On:04 Nov 2008 13:02
Last Modified:16 May 2012 09:17

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