Gattringer, Christof and Goeckeler, Meinulf and Hasenfratz, Peter and Hauswirth, Simon and Holland, Kieran and Joerg, Thomas and Juge, Keisuke J. and Lang, C. B. and Niedermayer, Ferenc and Rakow, P. E. L. and Schaefer, Stefan and Schaefer, Andreas (2004) Quenched spectroscopy with fixed-point and chirally improved fermions. NUCLEAR PHYSICS B, 677 (1-2). pp. 3-51. ISSN 0550-3213, 1873-1562
Full text not available from this repository. (Request a copy)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. (C) 2003 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GINSPARG-WILSON FERMIONS; LIGHT HADRON SPECTRUM; LATTICE GAUGE-THEORIES; DOMAIN-WALL FERMIONS; PERTURBATION-THEORY; OVERLAP FERMIONS; KOGUT-SUSSKIND; QCD; QUARKS; SYMMETRY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Petra Gürster |
| Date Deposited: | 20 Jul 2021 11:05 |
| Last Modified: | 20 Jul 2021 11:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38075 |
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