Effectiveness of nonperturbative O(a) improvement in lattice QCD

被引：46

作者：

Edwards, RG ^{[1
]}

Heller, UM ^{[1
]}

Klassen, TR ^{[1
]}

机构：

[1] Florida State Univ, SCRI, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.80.3448

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ALPHA Collaboration has determined the O(alpha) improved Wilson quark action for lattice spacings alpha = 0.1 fm, in the quenched approximation. We extend this result to coarser lattices, alpha less than or equal to 0.17 fm, and calculate the hadron spectrum on them. The large range of lattice spacings obtained by combining our results with earlier ones on finer lattices allows us to present a convincing demonstration of thr efficiency of nonperturbative O(alpha) improvement. We find that scaling violations of the hadron masses studied drop from 30% - 40% for the unimproved Wilson action on the coarsest lattice to only 2% - 3%.

引用

页码：3448 / 3451

页数：4

共 20 条

[1] MESON DECAY CONSTANTS FROM THE VALENCE APPROXIMATION TO LATTICE QCD [J].