Non-perturbative O(a) improvement of lattice QCD

被引：385

作者：

Luscher, M

Sint, S

Sommer, R

Weisz, P

Wolff, U

机构：

[1] FLORIDA STATE UNIV, SUPERCOMP COMPUTAT RES INST, TALLAHASSEE, FL 32306 USA

[2] DESY IFH ZEUTHEN, D-15738 ZEUTHEN, GERMANY

[3] CERN, DIV THEORY, CH-1211 GENEVA 23, SWITZERLAND

[4] MAX PLANCK INST PHYS & ASTROPHYS, D-80805 MUNICH, GERMANY

[5] HUMBOLDT UNIV BERLIN, INST PHYS, D-10099 BERLIN, GERMANY

来源：

NUCLEAR PHYSICS B | 1997年 / 491卷 / 1-2期

关键词：

elementary particle physics; quantum chromodynamics (QCD); lattice gauge theory; chiral symmetry; Symanzik improvement; numerical simulations; partially conserved axial vector current;

D O I：

10.1016/S0550-3213(97)00080-1

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The coefficients multiplying the counterterms required for O(a) improvement of the action and the isovector axial current in lattice QCD are computed non-perturbatively, in the quenched approximation and for bare gauge couplings g(0) in the range 0 less than or equal to g(0) less than or equal to 1. A finite-size method based on the Schrodinger functional is employed, which enables us to perform all calculations at zero or nearly zero quark mass. As a by-product the critical hopping parameter kappa(c) is obtained at all couplings considered. (C) 1997 Elsevier Science B.V.

引用

页码：323 / 343

页数：21

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