Instanton dominance of topological charge fluctuations in QCD? art. no. 014506

被引：38

作者：

Hip, I

Lippert, T

Neff, H

Schilling, K

Schroers, W

机构：

[1] Berg Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[2] Forschungszentrum Julich, NIC, D-52425 Julich, Germany

[3] DESY, D-22603 Hamburg, Germany

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.65.014506

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the local chirality of near-zero eigenvectors from Wilson-Dirac and clover improved Wilson-Dirac lattice operators as proposed recently by Horvath et al. We study finer lattices and repair for the loss of orthogonality due to the non-normality of the Wilson-Dirac matrix. As a result we do see a clear double peak structure on lattices with resolutions higher than 0.1 fm. We find that the lattice artifacts can be considerably reduced by exploiting the biorthogonal system of left and right eigenvectors. We conclude that the dominance of instantons in topological charge fluctuations is not ruled out by local chirality measurements.

引用

页数：5

共 50 条

[21] Critical comparison of different definitions of topological charge on the lattice -: art. no. 114506
Allés, B
D'Elia, M
Di Giacomo, A
Kirchner, R
PHYSICAL REVIEW D, 1998, 58 (11)
[22] Stabilizing the discrete vortex of topological charge S=2 -: art. no. 016606
Kevrekidis, PG
Frantzeskakis, DJ
PHYSICAL REVIEW E, 2005, 72 (01):
[23] DYNAMICAL EXPLANATION FOR THE POSITIVITY OF TOPOLOGICAL CHARGE FLUCTUATIONS IN QCD
BANKS, T
YANKIELOWICZ, S
PHYSICS LETTERS B, 1981, 104 (04) : 301 - 304
[24] Inherently global nature of topological charge fluctuations in QCD
Horváth, I
Alexandru, A
Zhang, JB
Chen, Y
Dong, SJ
Draper, T
Lee, FX
Liu, KF
Mathur, N
Tamhankar, S
Thacker, HB
PHYSICS LETTERS B, 2005, 612 (1-2) : 21 - 28
[25] Coexistence of superconductivity and antiferromagnetism in CeRh1-xCoxIn5 -: art. no. 014506
Zapf, VS
Freeman, EJ
Bauer, ED
Petricka, J
Sirvent, C
Frederick, NA
Dickey, RP
Maple, MB
PHYSICAL REVIEW B, 2002, 65 (01):
[26] Gluino condensation in an interacting instanton ensemble -: art. no. 035013
Schäfer, T
PHYSICAL REVIEW D, 2000, 62 (03): : 1 - 11
[27] Measuring charge fluctuations in high-energy nuclear collisions -: art. no. 024904
Mrówczynski, S
PHYSICAL REVIEW C, 2002, 66 (02)
[28] Fluctuations in network dynamics -: art. no. 028701
de Menezes, MA
Barabási, AL
PHYSICAL REVIEW LETTERS, 2004, 92 (02) : 4
[29] Doping dependence of the resonance peak and incommensuration in high-Tc superconductors -: art. no. 014506
Li, JX
Gong, CD
PHYSICAL REVIEW B, 2002, 66 (01)
[30] Charge radii and magnetic polarizabilities of ρ and K* mesons in QCD string theory -: art. no. 116009
Kruglov, SI
PHYSICAL REVIEW D, 1999, 60 (11)

← 1 2 3 4 5 →