DISPERSION AND RETARDATION COEFFICIENTS FOR 2 LITHIUM ATOMS

We present the motion of the valence electron in the field of a closed Li+ core with a one-electron model potential, and calculate the dynam ic multipole polarizabilities of the ground state of lithium at imagin ary frequencies through a variation-perturbation approach. They are us ed to calculate the dispersion coefficients, C-6, C-8, and C-10 and th e retardation coefficients. The dispersion coefficients and retardatio n coefficients govern the retardation potentials between two lithium a toms. The present numerical results are compared with other calculatio ns.