ON THE QUARK-ANTIQUARK POTENTIAL AT SHORT DISTANCES

被引：2

作者：

ALTEVOGT, P ^{[1
]}

GUTBROD, F ^{[1
]}

机构：

[1] DESY, W-2000 HAMBURG, GERMANY

来源：

NUCLEAR PHYSICS B | 1995年 / 452卷 / 03期

关键词：

D O I：

10.1016/0550-3213(95)00363-W

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：

We investigate the static quark-antiquark potential up to distances of 8 lattice units for pure SU(2) gauge theory on lattices with anisotropic couplings, The action is the Wilson action with a coupling for time-like plaquettes which differs from those for space-like ones. Numerical simulations are performed in a large range of beta. The potential is obtained by fitting ''cooled'' Wilson loops with up to four exponential terms. An interpolation of the potentials by a sum of a perturbative term, a linear term and by lattice artifacts shows poor scaling in comparison with the isotropic case. If the coupling in the time-like region is reduced, the linear term is much smaller than in the isotropic case, and vice versa. Consequences for the bag picture for hadrons are discussed.

引用

页码：649 / 674

页数：26

共 35 条

[1] RELAXATION METHODS FOR GAUGE FIELD EQUILIBRIUM EQUATIONS [J].