Nambu-Jona-Lasinio model beyond the mean-field approximation

被引：1
|
作者：
Guo, H [1 ]
Deng, WZ [1 ]
Ye, HX [1 ]
Yang, LM [1 ]
机构：
[1] BEIJING UNIV, DEPT PHYS, BEIJING 100871, PEOPLES R CHINA
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 1997年 / 27卷 / 01期
关键词：
D O I：
10.1088/0253-6102/27/1/61
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using the flavor SU(3) NJL model and in the ladder approximation we investigate the properties of mesons due to the <q(q)over bar> collective excitation. Then, beyond the mean-field approximation, the modified gap equations induced by meson cloud are obtained and the numerical analyses performed. Our results show that this correction is important for the constituent quark mass and the quark condensate.
引用
收藏
页码：61 / 66
页数：6
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