TITLE:
Exactly Solvable Schrödinger Equation with Hypergeometric Wavefunctions
AUTHORS:
J. Morales, J. García-Martínez, J. García-Ravelo, J. J. Peña
KEYWORDS:
Canonical Transformation, Schrödinger-Like Equation, Hypergeometric DE, Exactly-Solvable Potentials
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.3 No.11,
November
26,
2015
ABSTRACT: In this work, the canonical transformation method is applied to a general second order differential equation (DE) in order to trasform it into a Schr?dinger-like DE. Our proposal is based on an auxiliary function g(x) which determines the transformation needed to find exactly-solvable potentials associated to a known DE. To show the usefulness of the proposed approach, we consider explicitly their application to the hypergeometric DE with the aim to find quantum potentials with hypergeometric wavefunctions. As a result, different potentials are obtained depending on the choice of the auxiliary function; the generalized Scarf, Posh-Teller, Eckart and Rosen-Morse trigonometric and hyperbolic potentials, are derived by selecting g(x) as constant and proportional to the P(x) hypergeometric coefficient. Similarly, the choices g(x)~P(x)/x2 and g(x)~x2/P(x) give rise to a class of exactly-solvable generalized multiparameter exponential-type potentials, which contain as particular cases the Hulthén, Manning-Rosen and Woods-Saxon models, among others. Our proposition is general and can be used with other important DE within the frame of applied matematics and physics.