NONPERTURBATIVE CORRECTIONS TO PERTURBATIVE QUARK POTENTIALS

被引:7
|
作者
LIU, JP
HUANG, HW
WANG, R
机构
[1] UNIV HEIDELBERG,INST PHYS & ASTRON,W-6900 HEIDELBERG,GERMANY
[2] UNIV HEIDELBERG,FAC PHYS,W-6900 HEIDELBERG,GERMANY
来源
PHYSICAL REVIEW D | 1994年 / 49卷 / 07期
关键词
D O I
10.1103/PhysRevD.49.3474
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The leading nonperturbative QCD corrections to the perturbative potentials for the interactions between quarks and between a quark and an antiquark are obtained in the framework of the unitary expansion of the scattering operator. The contributions of the quark and gluon condensates [qqBAR] and [GG] to the propaptors as well as the vertices of the scattering matrix are included. Both cases of equal and different quark masses are investigated. The results show that there are linear terms with complicated structure and a cubic spin-independent term, the spin structure of which are vector-type. The exponential attenuation terms and the Yukawa terms appear automatically in the potentials.
引用
收藏
页码:3474 / 3479
页数:6
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