The exact three-dimensional half-shell t-matrix for a sharply cut-off Coulomb potential in the screening limit
arXiv:0905.4136 · doi:10.1007/s00601-009-0058-z
Abstract
The three-dimensional half-shell t-matrix for a sharply cut-off Coulomb potential is analytically derived together with its asymptotic form without reference to partial wave expansion. The numerical solutions of the three-dimensional Lippmann-Schwinger equation for increasing cut-off radii provide half-shell t-matrices which are in quite a good agreement with the asymptotic values.
15 pages, 4 eps figures