标题： 变分理论和核系统中的帕克特图：中子物质的综合研究 显示英文标题

标题： Variational Theory and Parquet Diagrams for Nuclear Systems: A Comprehensive Study of Neutron Matter

摘要： 为处理现实核相互作用的问题，我们结合了Jastrow-Feenberg变分法和技术和局部parquet图理论。 在图示微扰理论的语言中， “对易子图”可以与非parquet图相对应。 我们研究这些项所描述的物理过程，并以Jastrow-Feenberg方法所建议的方式包含相关图。 我们证明，非parquet贡献的修正，在短距离下，比所有其他多体效应都大。 我们在这里以中子物质为例，研究具有状态依赖相互作用的系统。 计算是针对通过所谓$v_8$版本的四种流行相互作用的中子进行的。 我们确定结构和有效相互作用，并将该方法应用于能量、结构和动态性质（如单粒子自能和动态响应函数）以及单重态和三重态中的BCS配对的计算。 我们发现，多体关联导致自旋-轨道相互作用的强烈减少，从而导致$^3P_2$和$^3P_2$-$^3F_2$间隙的抑制。 我们还发现$^3P_0$状态中的配对；配对间隙的强度对所采用的势模型非常敏感。 显示英文摘要

摘要： To deal with the problem of realistic nuclear interactions we have combined techniques of the Jastrow-Feenberg variational method and the local parquet-diagram theory. In the language of diagrammatic perturbation theory, ``commutator diagrams'' can be identified with non-parquet diagrams. We examine the physical processes described by these terms and include the relevant diagrams in a way that is suggested by the Jastrow-Feenberg approach. We show that the corrections from non-parquet contributions are, at short distances, larger than all other many-body effects. We examine here neutron matter as a prototype of systems with state-dependent interactions. Calculations are carried out for neutrons interacting via the so-called $v_8$ version of four popular interactions. We determine the structure and effective interactions and apply the method to the calculation of the energetics, structure and dynamic properties such as the single-particle self-energy and the dynamic response functions as well as BCS pairing in both singlet and triplet states. We find that many-body correlations lead to a strong reduction of the spin-orbit interaction, and, therefore, to a suppression of the $^3P_2$ and $^3P_2$-$^3F_2$ gaps. We also find pairing in $^3P_0$ states; the strength of the pairing gap depends sensitively on the potential model employed.