Relativistic effects in Sr, Dy, YbII, and YbIII and search for variation of the fine-structure constant

被引：86

作者：

Dzuba, VA ^{[1
]}

Flambaum, VV ^{[1
]}

Marchenko, MV ^{[1
]}

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.68.022506

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A possibility for fundamental constants to vary in time is suggested by theories unifying gravity with other interactions. In this article we examine proposals to use optical transitions of Sr, Dy, Yb II, and Yb III for the search of the time variation of the fine-structure constant alpha. Frequencies of atomic transitions are calculated using the relativistic Hartree-Fock method and configuration interaction technique. The effect of variation of alpha on the frequencies is studied by varying alpha in computer codes. Accuracy of measurements needed to improve the current best limit on the time variation of alpha is discussed.

引用

页数：5

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