RPA GROUND-STATE CORRELATIONS IN NUCLEI

被引：44

作者：

LENSKE, H

WAMBACH, J

机构：

[1] UNIV ILLINOIS, URBANA, IL 61801 USA

[2] FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, W-5170 JULICH 1, GERMANY

来源：

PHYSICS LETTERS B | 1990年 / 249卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(90)91001-R

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Overcounting in the RPA theory of ground state correlations is shown to be avoided if exact rather than quasiboson commutators are used. Single particle occupation probabilities are formulated in a compact way by the RPA Green function. Calculations with large configuration spaces and realistic interactions are performed with 1p1h RPA and second RPA (SRPA) including 2p2h mixing in excited states. In 41Ca valence hole states are found to be quenched by about 10% in RPA and up to 18% in SRPA. Contributions from low and high lying excitations and their relation to long and short range correlations in finite nuclei are investigated. © 1990.

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页码：377 / 380

页数：4

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