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Titolo:
Role of instanton size distributions for dynamical chiral symmetry breaking - art. no. 054005
Autore:
Watabe, T; Fukushima, M; Toki, H;
Indirizzi:
Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan Osaka Univ Osaka Japan 5670047 , Nucl Phys Res Ctr, Osaka 5670047, Japan
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 5, volume: 6205, anno: 2000,
pagine: 4005 -
SICI:
0556-2821(20000901)6205:5<4005:ROISDF>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATTICE GAUGE-THEORY; QUANTUM CHROMODYNAMICS; QUARK CONFINEMENT; COLOR CONFINEMENT; ABELIAN GAUGE; SU(2) VACUUM; MONOPOLES; TOPOLOGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Watabe, T Osaka Univ, Nucl Phys Res Ctr, Osaka 5670047, Japan Osaka Univ Osaka Japan 5670047 s Res Ctr, Osaka 5670047, Japan
Citazione:
T. Watabe et al., "Role of instanton size distributions for dynamical chiral symmetry breaking - art. no. 054005", PHYS REV D, 6205(5), 2000, pp. 4005

Abstract

We study the properties of SU(N-f) light quarks in the multi-instanton vacuum of QCD. We formulate the dynamical symmetry breaking for light quarks of various numbers of flavor N-f with the inclusion of the instanton size distribution. We find that the quark mass function increases rapidly toward small Euclidean momenta when the finite size distribution is introduced witha power law fall-off of large instanton size, rho(-n) (n>3). We observe a confining feature of light quarks for small fall-off parameter n and for large packing fraction <(rho)over bar>/(R) over bar in the behavior of the quark mass function extrapolated to the timelike region.

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Documento generato il 06/04/20 alle ore 23:32:49