Combination of perturbation theory with the configuration-interaction method

被引：8

作者：

Kozlov, M. G. ^{[1
,2
]}

Tupitsyn, I. I. ^{[3
]}

Bondarev, A., I ^{[4
]}

Mironova, D., V ^{[2
]}

机构：

[1] Kurchatov Inst, Petersburg Nucl Phys Inst NRC, Gatchina 188300, Russia

[2] St Petersburg Electrotech Univ LETI, Prof Popov Str 5, St Petersburg 197376, Russia

[3] St Petersburg State Univ, Dept Phys, Ulianovskaya 1, St Petersburg 198504, Russia

[4] Peter Great St Petersburg Polytech Univ, Ctr Adv Studies, Polytekh Skaja 29, St Petersburg 195251, Russia

来源：

PHYSICAL REVIEW A | 2022年 / 105卷 / 05期

关键词：

PROGRAM; ATOMS;

D O I：

10.1103/PhysRevA.105.052805

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The present atomic theory provides accurate and reliable results for atoms with a small number of valence electrons. However, most current methods of calculations fail when the number of valence electrons exceeds four or five. This means that we cannot make reliable predictions for more than half of the periodic table. Here we suggest a modification of the configuration interaction plus many-body perturbation theory, which may be applicable to atoms and ions with partly filled d and f shells.

引用

页数：10

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