Precise Determination of Electric Dipole Polarizabilities of Sr Clock States Using Linear-Response and Equation-of-Motion Relativistic Coupled-Cluster Methods
This study precisely determined Sr's ground and excited state electric dipole polarizabilities using relativistic coupled-cluster methods (RCC) via linear-response and equation-of-motion techniques. The results provide reliable values for Sr clock states, showing good agreement with experimental data, though basis set incompleteness remains a key source of uncertainty.