Theoretical calculations on Landé g-factors and quadratic Zeeman shift coefficients of nsnp ^(3)P_(0)^(o) clock states in Mg and Cd optical lattice clocks  

作　　者：卢本全 常宏 Benquan Lu;Hong Chang(National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China;The University of Chinese Academy of Sciences,Beijing 100088,China)

机构地区：[1]National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China [2]The University of Chinese Academy of Sciences,Beijing 100088,China

出　　处：《Chinese Physics B》2023年第1期278-285,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.61775220);the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No.XDB21030100);the Key Research Project of Frontier Science of the Chinese Academy of Sciences (Grant No.QYZDB-SSW-JSC004)。

摘　　要：The study of magnetic field effects on the clock transition of Mg and Cd optical lattice clocks is scarce.In this work,the hyperfine-induced Landég-factors and quadratic Zeeman shift coefficients of the nsnp ^(3)P_(0)^(o) clock states for ^(111,113)Cd and ^(25)Mg were calculated by using the multi-configuration Dirac–Hartree–Fock theory.To obtain accurate values of these parameters,the impact of electron correlations and furthermore the Breit interaction and quantum electrodynamical effects on the Zeeman and hyperfine interaction matrix elements,and energy separations were investigated in detail.We also estimated the contributions from perturbing states to the Landég-factors and quadratic Zeeman shift coefficients concerned so as to truncate the summation over the perturbing states without loss of accuracy.Our calculations provide important data for estimating the first-and second-order Zeeman shifts of the clock transition for the Cd and Mg optical lattice clocks.

关 键 词：optical lattice clock hyperfine-induced Landég-factor quadratic Zeeman shift coefficient Mg and Cd 

分 类 号：O469[理学—凝聚态物理]