Nuclear Ground State Correlations

被引：1

作者：

Kamerdzhiev, S. P. ^{[1
]}

Shitov, M. I. ^{[1
]}

机构：

[1] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia

来源：

MOSCOW UNIVERSITY PHYSICS BULLETIN | 2023年 / 78卷 / 03期

关键词：

ground state correlations; Green's functions; Feynman diagrams; quasiparticle-phonon interaction; E1-transitions between excited states; SELF-CONSISTENT CALCULATIONS; PARTICLE-PHONON INTERACTION; FINITE FERMI-SYSTEMS; MAGIC NUCLEI; 2P2H CONFIGURATIONS; MICROSCOPIC MODEL; PROBABILITIES; TRANSITIONS; STRENGTH; EQUATION;

D O I：

10.3103/S0027134923030104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The article discusses nuclear ground state correlations (GSCs), which are particularly clearly manifested when using the formalism of quantum Green's functions (GFs) and Feynman diagrams. In addition to the one-particle-one-hole ground state correlations in the well-known random phase approximation (RPA) method, there also exist and make a noticeable quantitative contribution GSCs that arise from using more complex configurations than in RPA, specifically, configurations containing phonons and those containing only three quasiparticles, phonon-GSCs and GSC3s, respectively. The latter case of GSC3 is discussed in detail in this paper. It has been shown that GSC3s make a significant quantitative contribution to problems related to explaining certain characteristics of low-lying excited states (phonons) and transitions between them in even-even nuclei.

引用

页码：316 / 323

页数：8

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