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Titolo:
Chiral properties of domain-wall quarks in quenched QCD - art. no. 114504
Autore:
Khan, AA; Aoki, S; Aoki, Y; Burkhalter, R; Ejiri, S; Fukugita, M; Hashimoto, S; Ishizuka, N; Iwasaki, Y; Izubuchi, T; Kanaya, K; Kaneko, T; Kuramashi, Y; Manke, T; Nagai, KI; Noaki, J; Okawa, M; Shanahan, HP; Taniguchi, Y; Ukawa, A; Yoshie, T;
Indirizzi:
Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan Univ Tsukuba Tsukuba Ibaraki Japan 3058577 sukuba, Ibaraki 3058577, Japan Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058570, Japan Univ Tsukuba Tsukuba Ibaraki Japan 3058570 sukuba, Ibaraki 3058570, Japan Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 N BNL Res Ctr, Upton, NY 11973 USA Univ Tokyo, Inst Cosm Ray Res, Tokyo 1888502, Japan Univ Tokyo Tokyo Japan 1888502 , Inst Cosm Ray Res, Tokyo 1888502, Japan KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan KEKTsukuba Ibaraki Japan 3050801 es Org, Tsukuba, Ibaraki 3050801, Japan Kanazawa Univ, Dept Phys, Kanazawa, Ishikawa 9201192, Japan Kanazawa UnivKanazawa Ishikawa Japan 9201192 wa, Ishikawa 9201192, Japan Washington Univ, Dept Phys, St Louis, MO 63130 USA Washington Univ St Louis MO USA 63130 , Dept Phys, St Louis, MO 63130 USA
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 11, volume: 6311, anno: 2001,
pagine: 4504 -
SICI:
0556-2821(20010601)6311:11<4504:CPODQI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXACTLY MASSLESS QUARKS; LATTICE QCD; WILSON FERMIONS; GAUGE-THEORY; DIRAC OPERATOR; U(1) PROBLEM; INSTANTONS; BREAKING; SPECTRUM; MASSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
58
Recensione:
Indirizzi per estratti:
Indirizzo: Khan, AA Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058577, Japan Univ Tsukuba Tsukuba Ibaraki Japan 3058577 baraki 3058577, Japan
Citazione:
A.A. Khan et al., "Chiral properties of domain-wall quarks in quenched QCD - art. no. 114504", PHYS REV D, 6311(11), 2001, pp. 4504

Abstract

We investigate the chiral properties of quenched domain-wall QCD (DWQCD) at the lattice spacings a(-1) similar or equal to 1 and 2 GeV for both plaquette and renormalization-group (RG) improved gauge actions. In the case of the plaquette action we find that the quark mass defined through the axial Ward-Takahashi identity remains non-vanishing in the DWQCD chiral limit that the bare quark mass m(f)-->0 and the length of the fifth dimension N-s-->infinity, indicating that chiral symmetry is not realized with quenched DWQCD up to a(-1) similar or equal to 2 GeV. The behavior is much improved for the RG-improved gauge action: while a nonvanishing quark mass remains in the chiral limit at a(-1) similar or equal to 1 GeV, the result at a(-1) similar or equal to 2 GeV is consistent with an exponentially vanishing quarkmass in the DWQCD chiral limit, indicating the realization of exact chiralsymmetry. An interpretation and implications are briefly discussed.

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Documento generato il 02/04/20 alle ore 00:00:59