Sw. Qian et al., SEPARATION OF VARIABLES TREATMENT OF THE INVARIANT QUADRATIC IN MOMENTUM FOR ANY ADMISSIBLE POTENTIAL, Annals of physics (Print), 266(2), 1998, pp. 497-502
We apply the new method developed recently by Efthimiou and Spector [P
hys. Rev. A 49 (1994), 2301] to obtain the eigenfunctions of the invar
iant operator and the Lewis-Riesenfeld phase for any admissible potent
ial. As an example we discuss a perturbed harmonic Oscillator. (C) 199
8 Academic Press.