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Hadron spectrum, quark masses and decay constants from light overlap fermions on large lattices

Galletly, D.; Gürtler, M.; Horsley, R.; Perlt, H.; Rakow, P.E.L.; Schierholz, G.; Schiller, A. and Streuer, T. (2007) Hadron spectrum, quark masses and decay constants from light overlap fermions on large lattices. Physical Review D, 75 . Article Number: 073015. ISSN 1550-2368 (Online); 1550-7998 (Print)

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Official URL: http://link.aps.org/abstract/PRD/v75/e073015

Cited 7 times in WoS

Abstract

We present results from a simulation of quenched overlap fermions with L\"uscher-Weisz gauge field action on lattices up to $24^3 48$ and for pion masses down to $\approx 250$ MeV. Among the quantities we study are the pion, rho and nucleon masses, the light and strange quark masses, and the pion decay constant. The renormalization of the scalar and axial vector currents is done nonperturbatively in the $RI-MOM$ scheme. The simulations are performed at two different lattice spacings, $a \approx 0.1$ fm and $\approx 0.15$ fm, and on two different physical volumes, to test the scaling properties of our action and to study finite volume effects. We compare our results with the predictions of chiral perturbation theory and compute several of its low-energy constants. The pion mass is computed in sectors of fixed topology as well.

Item Type:Article
Additional Information:LTH 706. arXiv Number: arXiv:hep-lat/0607024v1. 14 Pages. Published 20 April 2007. Issue: April 2007.
Uncontrolled Keywords:CHIRAL PERTURBATION-THEORY; EXACTLY MASSLESS QUARKS; NONPERTURBATIVE RENORMALIZATION; COMPOSITE-OPERATORS; ANOMALOUS DIMENSION; WILSON FERMIONS; GAUGE-THEORIES; QUENCHED QCD; ONE-LOOP; CONDENSATE
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:10.1103/PhysRevD.75.073015
Publisher's Statement:©2007 The American Physical Society
Related URLs:
Refereed:Yes
Status:Published
ID Code:102
Deposited On:10 Oct 2007 14:56
Last Modified:20 May 2011 19:34

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