On Dalgarno and Lewis Perturbation Theory for Scattering States
arXiv:quant-ph/0609233 · doi:10.1016/j.physleta.2007.03.031
Abstract
We apply the method of Dalgarno and Lewis to scattering states and discuss the choice of the unperturbed model in order to have a convergent perturbation series for the phase shift.
10 pages, 2 figures