Exact solutions of the Schrodinger equation (-d/dx2+x2+ λx2/(1 +gx2))ψ(x) =Eψ(x)

Abstract
The authors prove the existence of a class of exact eigenvalues and eigenfunctions of the Schrodinger equation for the potential x2 + λx2/(1 + gx2) when certain algebraic relations between λ and g hold. Some of the properties of these solutions are discussed. It is shown that in a certain sense they may be regarded as Sturmians for the Schrodinger equation with the potential x2 - λ/(g + g2x2).