Perturbative calculations of P, T-odd effects in heavy polar diatomic molecules

Abstract

A fully-relativistic second order many-body perturbation theory (MBPT(2)) is employed to compute the P, T-odd interaction constant Wsub/d of the ground (2sup/Σ/sub1/2) states of YbF and BaF molecules. Since MBPT(2) incorporates the correlation and relaxation effects in a balanced manner, we expect that the present estimates of W/sub d will be important to provide a reliable limit on the electron's electric dipole moment (EDM) /sub de