Relativistic equation-of-motion coupled-cluster theory analysis of black-body radiation shift in the clock transition of Zn I

Autor:	Chamoli, Somesh, Mishra, Anmol, Kesarkar, Richa Sharma, Sahoo, B. K., Dutta, Achintya Kumar
Rok vydání:	2023
Předmět:	Physics - Atomic Physics
Druh dokumentu:	Working Paper
Popis:	We have employed equation-of-motion coupled-cluster (EOM-CC) method in the four-component relativistic theory framework to understand roles of electron correlation effects in the $\textit{ab initio}$ estimations of electric dipole polarizabilities ($\alpha$) of the states engaged in the clock transition ($^{1}$S$_{0}$$\rightarrow$$^{3}$P$_{0}$) of the zinc atom. Roles of basis size, inclusion of higher-level excitations, and higher-order relativistic effects in the evaluation of both excitation energies of a few low-lying excited states and $\alpha$ are analyzed systematically. Our EOM-CC values are compared with the earlier reported theoretical and experimental results. This demonstrates the capability of the EOM-CC method to ascertain the preciseness of the black-body radiation shift in a clock transition, which holds paramount importance for optical clock-based experiments. Comment: 3 Figures, 11 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.16879 Zobrazit plný text záznamu View this record from Arxiv