Fit to gluon propagator and Gribov formula

被引：33
|
作者：
Cucchieri, A
Zwanziger, D
机构：
[1] Univ Sao Paulo, IFSC, BR-13560970 Sao Carlos, SP, Brazil
[2] NYU, Dept Phys, New York, NY 10003 USA
来源：
PHYSICS LETTERS B | 2002年 / 524卷 / 1-2期
基金：
美国国家科学基金会; 巴西圣保罗研究基金会;
关键词：
gluon propagator; confinement; color-Coulomb potential; Gribov horizon; running coupling constant;
D O I：
10.1016/S0370-2693(01)01365-X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report a numerical study of SU(2) lattice gauge theory in the minimal Coulomb gauge at beta = 2.2 and 9 different volumes. After extrapolation to infinite volume, our fit agrees with a lattice discretization of Gribov's formula for the transverse equal-time would-be physical gluon propagator, that vanishes like [k] at k = 0, whereas the free equal-time propagator (2 \k\)(-1) diverges. Our fit lends reality to a confinement scenario in which the would-be physical gluons leave the physical spectrum while the long-range Coulomb force confines color. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：123 / 128
页数：6
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