RELATIVISTIC MANY-BODY CALCULATION OF THE ELECTRIC-DIPOLE MOMENT OF ATOMIC RUBIDIUM DUE TO PARITY AND TIME-REVERSAL VIOLATION

In this paper fully ab initio calculations of the electric dipole mome nt (EDM) of atomic rubidium due to two possible mechanisms-the intrins ic electric dipole moment of the electron and the scalar-pseudoscalar coupling between the electrons and the nucleons-are presented. The cal culations were carried out using an approach which is a hybrid of the diagrammatic many-body perturbation theory (MBPT) and the multiconfigu ration Dirac-Fock method. These calculations, unlike any of the previo us MBPT calculations for the rubidium atom, also take into account the effects of electron pair correlations on the atomic EDM. Our results demonstrate that these effects can make significant contributions to t he EDM of alkali-metal atoms.