Slater approximation for Coulomb exchange effects in nuclear covariant density functional theory

被引：26

作者：

Gu, Huai-Qiang ^{[1
,2
]}

Liang, Haozhao ^{[3
,4
]}

Long, Wen Hui ^{[1
]}

Nguyen Van Giai ^{[5
,6
]}

Meng, Jie ^{[2
,4
,7
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

[2] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China

[3] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[4] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[5] Inst Phys Nucl, IN2P3, CNRS, F-91406 Orsay, France

[6] Univ Paris 11, F-91406 Orsay, France

[7] Univ Stellenbosch, Dept Phys, ZA-7600 Stellenbosch, South Africa

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 04期

基金：

中国国家自然科学基金;

关键词：

HARTREE-BOGOLIUBOV THEORY;

D O I：

10.1103/PhysRevC.87.041301

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The relativistic local density approximation (LDA) for the Coulomb exchange functional in nuclear systems is presented. This approximation is composed of the well-known Slater approximation in the nonrelativistic scheme and the corrections due to the relativistic effects. Its validity in finite nuclei is examined by comparing with the exact treatment of the Coulomb exchange term in the relativistic Hartree-Fock-Bogoliubov theory. The relativistic effects are found to be important and the exact Coulomb exchange energies can be reproduced by the relativistic LDA within 5% demonstrated by the semimagic Ca, Ni, Zr, Sn, and Pb isotopes from proton drip line to neutron drip line. DOI: 10.1103/PhysRevC.87.041301

引用

页数：5

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