Quenched hadron spectroscopy with improved staggered quark action

被引：45
作者：
Bernard, C [1 ]
Blum, T
DeGrand, TA
DeTar, C
Gottlieb, S
Heller, UM
Hetrick, JE
McNeile, C
Rummukainen, K
Sugar, B
Toussaint, D
机构：
[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[2] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
[4] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA
[5] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
[6] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA
[7] Univ Pacific, Dept Phys, Stockton, CA 95211 USA
[8] NORDITA, DK-2100 Copenhagen O, Denmark
[9] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[10] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
来源：
PHYSICAL REVIEW D | 1998年 / 58卷 / 01期
关键词：
D O I：
10.1103/PhysRevD.58.014503
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate light hadron spectroscopy with an improved quenched staggered quark action. We compare the results obtained with an improved gauge plus an improved quark action, an improved gauge plus standard quark action, and the standard gauge plus standard quark action. Most of the improvement in the spectroscopy results is due to the improved gauge sector. However, the improved quark action substantially reduces violations of Lorentz invariance, as evidenced by the meson dispersion relations. [S0556-2821(98)03513-9].
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页数：14
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