Nonlocal four-quark condensate and vacuum susceptibilities

被引：0
|
作者：
Zong, HS [1 ]
Lü, XF
Zhao, EG
Wang, F
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
[3] Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2000年 / 33卷 / 04期
关键词：
instanton dilute liquid approximation; global colour symmetry model; vacuum saturation approximation; vacuum susceptibilities;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on the quark propagator in the instanton dilute liquid approximation, we have determined the nonlocal four-quark condensate at the mean-field level in the framework of global color symmetry model. By making use of this formula, the vacuum susceptibility (pion susceptibility) was calculated in this paper. The theoretical analysis and numerical calculation show that even at the mean-field level the naive vacuum saturation approximation is not a good approximation when we consider nonlocal four-quark condensate.
引用
收藏
页码：687 / 690
页数：4
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