High-precision study of Cs polarizabilities
Abstract
We present results of the first-principles calculation of Cs dipole static polarizabilities for the Ns (N = 6 - 12), Npj (N = 6 - 10), and Ndj (N = 5 - 10) states using the relativistic all-order method. In our implementation of the all-order method, single and double excitations of Dirac-Fock wave functions are included to all orders in perturbation theory. Additional calculations are carried out for the dominant terms and the uncertainties of our final values are estimated for all states. A comprehensive review of the existing theoretical and experimental studies of the Cs polarizabilities is also carried out. Our results are compared with other values where they are available. These calculations provide a theoretical benchmark for a large number of Cs polarizabilities.