The CJT calculation in studying nuclear matter beyond mean field approximation

被引：2

作者：

Shu, Song ^{[1
]}

Li, Jia-Rong ^{[2
]}

机构：

[1] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China

[2] Huazhong Normal Univ, Inst Particle Phys, Wuhan, Peoples R China

来源：

MODERN PHYSICS LETTERS A | 2008年 / 23卷 / 21期

基金：

中国国家自然科学基金;

关键词：

nuclear matter; finite temperature; field theory;

D O I：

10.1142/S0217732308025814

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have introduced the Cornwall-Jackiw-Tomboulis (CJT) resummation scheme in studying nuclear matter. Based on the CJT formalism and using Walecka model, we have derived a set of coupled Dyson equations of nucleons and mesons. Neglecting the medium effects of the mesons, the usual mean field theory (MFT) results can be obtained. The beyond MFT calculations have been performed by thermodynamic consistently determining the meson effective masses and solving the coupled gap equations for nucleons and mesons together. The numerical results for the nucleon and meson effective masses at finite temperature and chemical potential in nuclear matter are discussed.

引用

页码：1769 / 1780

页数：12

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