Eur. Phys. J. Plus (2018) 133: 83
https://doi.org/10.1140/epjp/i2018-11912-5

Regular Article

Exact solution of the Schrödinger equation for a short-range exponential potential with inverse square root singularity

¹ Institute for Physical Research, NAS of Armenia, 0203, Ashtarak, Armenia
² Institute of Physics and Technology, National Research Tomsk Polytechnic University, 634050, Tomsk, Russia

^* e-mail: aishkhanyan@gmail.com

Received: 9 January 2018
Accepted: 30 January 2018
Published online: 1 March 2018

Abstract

We introduce an exactly integrable singular potential for which the solution of the one-dimensional stationary Schrödinger equation is written through irreducible linear combinations of the Gauss hypergeometric functions. The potential, which belongs to a general Heun family, is a short-range one that behaves as the inverse square root in the vicinity of the origin and vanishes exponentially at the infinity. We derive the exact spectrum equation for the energy and discuss the bound states supported by the potential.