Applicability of the Dirac-Fock method combined with core polarization in calculations of alkali-metal atoms
Phys. Rev. A 113, 042809 – Published 10 April, 2026
DOI: https://doi.org/10.1103/cwhz-by5w
Abstract
In this work, we investigate the applicability of the core-polarization-corrected Dirac-Fock method, formulated within the framework of the local Dirac-Hartree-Fock (LDF) potential, for the accurate determination of static scalar and tensor electric dipole polarizabilities. This work presents theoretical values of blackbody-radiation-induced Stark shifts of atomic energy levels. The Dirac-Fock method augmented by core-polarization corrections is employed not only to evaluate these shifts but also to compute the Bethe logarithm for alkali-metal atoms. The results are critically compared with data available in the contemporary literature, and the strengths and limitations of the present approach are discussed.
