# K-matrix calculation for general nonlocal potentials

## Description

Abstract This program solves the one-channel Lippmann-Schwinger equation in the coordinate representation with a general (i.e. local or nonlocal) potential by the method of continued fractions. A high accuracy is obtained. Title of program: CEFEUSK Catalogue Id: ABRP_v1_0 Nature of problem The program CEFEUSK calculates the phase shifts (K-matrix) in the coordinate representation for the Lippmann-Schwinger integral equation with a general (local or nonlocal) potential. Unlike the other approaches, the nonlocal part of the potential is not assumed to be separable. The program can be widely applied for any calculation of elastic scattering processes like electron-atom scattering in the static exchange approximation, optical potential calculation etc. An important feature of the prog ... Versions of this program held in the CPC repository in Mendeley Data ABRP_v1_0; CEFEUSK; 10.1016/0010-4655(90)90181-Y This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)