Improving flavor symmetry in the Kogut-Susskind hadron spectrum

被引：113

作者：

Blum, T

DeTar, C

Gottlieb, S

Rummukainen, K

Heller, UM

Hetrick, JE

Toussaint, D

Sugar, RL

Wingate, M

机构：

[1] UNIV UTAH, DEPT PHYS, SALT LAKE CITY, UT 84112 USA

[2] INDIANA UNIV, DEPT PHYS, BLOOMINGTON, IN 47405 USA

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

[4] UNIV ARIZONA, DEPT PHYS, TUCSON, AZ 85721 USA

[5] UNIV CALIF SANTA BARBARA, DEPT PHYS, SANTA BARBARA, CA 93106 USA

[6] UNIV COLORADO, DEPT PHYS, BOULDER, CO 80309 USA

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.55.R1133

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the effect of modifying the coupling of Kogut-Susskind quarks to the gauge field by replacing the link matrix in the quark action by a ''fat link,'' or sum of link plus three-link paths. Flavor symmetry breaking, determined by the mass difference between the Goldstone and non-Goldstone local pions, is reduced by approximately a factor of 2 by this modification.

引用

页码：R1133 / R1137

页数：5

共 24 条

[1] GLUEBALL MASSES AND STRING TENSION IN LATTICE QCD [J].