Effects of correlation and Breit and transverse interactions in the relativistic local-density theory for atoms

The results of a recent calculation of the correlation energy in the relativistic electron gas are used to calculate the correlation contributions to the total energy and $1s$ binding energy in several heavy atomic systems. To assess the effects of a self-consistent calculation, a lowest-order perturbation scheme was also employed. The correlation contribution to the $K\alpha$ lines are compared to the differences between theoretical calculations without correlation of Huang et al. and the accurate experimental values of Deslattes et al. The contributions of Breit and transverse interactions to heavy atoms are calculated within a local-density scheme and comparisons are made to the nonlocal Dirac-Fock results of Mann and Johnson. It is found that nonlocal effects may be important.