2023/12/28 by Somesh Chamoli, Anmol Mishra, Chamoli, Somesh +7 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic Physics (physics.atom-ph) #Electron Spin Resonance Studies #FOS: Physical sciences #Magneto-Optical Properties and Applications
paper · pdf · doi:10.48550/arxiv.2312.16879
openalex publication_date 2023/12/28 · openalex created_date 2023/12/30 · openalex updated_date 2026/07/28
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 ab initio estimations of electric dipole polarizabilities (α) of the states engaged in the clock transition (1S0→3P0) 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 α 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.