Yao-Zhong Zhang

Stäckel transform, coupling constant metamorphosis and algebraization of quasi-exactly solvable systems

Abstract We extend the application of the notions of the Stäckel transform and the coupling constant metamorphosis to quasi-exactly solvable systems. We discover that for a variety of one-dimensional and separable multidimensional quasi-exactly solvable systems, their sl (2) alge...