Many-body calculations of the electron affinity for Ca and Sr

被引：37

作者：

Salomonson, S ^{[1
]}

Warston, H ^{[1
]}

Lindgren, I ^{[1
]}

机构：

[1] GOTHENBURG UNIV,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.76.3092

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have combined the quasiparticle method in many-body perturbation theory with methods used when solving the coupled-cluster equations in order to evaluate the proper self-energy potential beyond second order in perturbation theory. The method is used to calculate the affinities of Ca and Sr including second-order relativistic effects. The result is 19 meV for Ca- 4p(1/2) and 54 meV for Sr- 5p(1/2), which are in fair agreement with experiment.

引用

页码：3092 / 3095

页数：4

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