核物质的低能有效场论研究  

Low-energy effective field theory study of nuclear matter

作　　者：潘廷纬 杨继锋[1] PAN Tingwei;YANG Jifeng(School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China)

机构地区：[1]华东师范大学物理与电子科学学院,上海200241

出　　处：《华东师范大学学报（自然科学版）》2021年第1期82-91,共10页Journal of East China Normal University(Natural Science)

基　　金：国家自然科学基金(11435005)。

摘　　要：采用低能有效场论分析了核物质和零温费米系统;通过严格求解1S0分波Bethe-Goldstone方程(Bethe-Goldstone Equation, BGE),得到了闭合形式的Brückner G矩阵,并完成了其非微扰重整化.在对理论参数的值进行选取之后,完全了在Brückner G矩阵框架下,分析包括密度背景中的配对问题以及费米系统单粒子能量在内的物理性质.此外还将本文的框架和结果与其他文献进行了比较.In this study, the low-energy effective field theory approach is used to analyze nuclear matter and a zero-temperature Fermi system. By solving the Bethe-Goldstone equation(BGE) in the 1 S0 channel, we obtain the closed-form Brückner G matrix and derive its renormalized non-perturbative form. Upon selecting values for relevant parameters, a number of physical issues are analyzed with the Brückner G matrix, such as pairing and single particle energy of a Fermi system in the density background. Lastly, the framework and results are compared with those published in the literature.

关 键 词：有效场论 Brückner G矩阵 重整化 有限密度 

分 类 号：O412.3[理学—理论物理]