Nonrelativistic quantum electrodynamic approach to polarizabilities of light atoms

被引：0

作者：

Mei, Xue-Song ^{[1
,3
]}

Zhou, Wan-Ping ^{[2
]}

Qiao, Hao-Xue ^{[1
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

[2] Hubei Univ Technol, Engn & Technol Coll, Wuhan 430068, Hubei, Peoples R China

[3] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2019年 / 52卷 / 22期

基金：

中国国家自然科学基金;

关键词：

nonrelativistic quantum electrodynamics; polarizabilities; light atoms; FREQUENCY; HELIUM;

D O I：

10.1088/1361-6455/ab495f

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We derive polarizabilities for light atoms and their relativistic and radiative corrections by using nonrelativistic quantum electrodynamics (NRQED). We find out that if we use NRQED directly on the polarizabilities, it will lead to gauge-dependent terms which should be cancelled out by summing all the Feynman diagrams. The elimination of these gauge-dependent terms will become very cumbersome in the calculations of relativistic and radiative corrections. By combining the PowerZienau-Woolley transformation with NRQED, we have simplified this process. In addition to this, the combination allows us to obtain not only the electric dipole polarizability but also other kinds of polarizabilities, such as magnetic, Coulomb-transversal and hyperpolarizabilities, in a unified way. In the following article we introduce this combined method and show a systematic procedure to derive the polarizabilities as well as the relativistic, radiative corrections to some of them.

引用

页数：15