Exactly Solvable Schrödinger Equation with Hypergeometric Wavefunctions


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.

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Morales, J. , García-Martínez, J. , García-Ravelo, J. and Peña, J. (2015) Exactly Solvable Schrödinger Equation with Hypergeometric Wavefunctions. Journal of Applied Mathematics and Physics, 3, 1454-1471. doi: 10.4236/jamp.2015.311173.

Conflicts of Interest

The authors declare no conflicts of interest.


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