Finite-size effect in lattice QCD hadron spectroscopy

Journal Article · Mon Feb 10 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.761· OSTI ID:5135847

Fukugita, M; Mino, H; Okawa, M; Ukawa, A ^[1]

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1. Research Institute for Fundamental Physics, Kyoto University, Kyoto 606 (Japan) Faculty of Engineering, Yamanashi University, Kofu 400 (Japan) National Laboratory for High Energy Physics (KEK), Ibaraki 305 (Japan) Institute of Physics, University of Tsukuba, Ibaraki 305 (Japan)

A hadron spectrum calculation with two light dynamical quark flavors was carried out with the Kogut-Susskind quark action at {beta}=5.7 on lattices of spatial size 8{sup 3}, 12{sup 3}, and 20{sup 3} for {ital m}{sub {ital q}}=0.01 and 0.02 in lattice units, with emphasis given to a systematic study of the finite-lattice-size effect. It is found that hadron masses on a 16{sup 3} spatial lattice at this {beta} still suffer from a significant finite-lattice effect at least for {ital m}{sub {ital q}}=0.01, showing the importance of a quantitative control over the finite-size effect in comparing simulation results with the experimental hadron masses even for a fairly large lattice. A comparison is also made to the analytic prediction for the finite-size effect from chiral perturbation theory.

• OSTI ID: 5135847
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:6; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
CHIRAL SYMMETRY
EFFECTIVE MASS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
LATTICE FIELD THEORY
MASS
MESONS
MONTE CARLO METHOD
NUCLEONS
ORDER PARAMETERS
PERTURBATION THEORY
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RHO-770 MESONS
SYMMETRY
VECTOR MESONS