G. Levai et Bw. Williams, THE GENERALIZED COULOMB PROBLEM - AN EXACTLY SOLVABLE MODEL, Journal of physics. A, mathematical and general, 26(13), 1993, pp. 3301-3306
We investigate an exactly solvable potential class which contains the
Coulomb potential as a special case. These potentials have an angular-
momentum-dependent repulsive core, but retain several important charac
teristics of the Coulomb problem. Some possible fields of their applic
ation are also proposed.