Meson contributions in the Nambu-Jona-Lasinio model

被引：0
|
作者：
V. E. Rochev
机构：
[1] Institute for High Energy Physics,
来源：
Theoretical and Mathematical Physics | 2009年 / 159卷
关键词：
Nambu-Jona-Lasinio model; mean-field expansion; Legendre transformation; chiral Ward identity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We discuss the problem of calculating corrections to the mean-field approximation in the Nambu-Jona-Lasinio model. To calculate such corrections, we propose using the method of the Legendre transformation with respect to a bilocal source, which allows taking symmetry constraints related to the chiral Ward identity into account effectively. Using the proposed method, we determine the corrections to the quark propagator and the two-particle quark function.
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页码：488 / 498
页数：10
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