Quasi-exactly solvable extended trigonometric Pöschl-Teller potentials with position-dependent mass
Physique Nucléaire Théorique et Physique Mathématique, Université Libre de Bruxelles, Campus de la Plaine CP229, Boulevard du Triomphe, B-1050, Brussels, Belgium
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Accepted: 17 May 2019
Published online: 13 August 2019
Infinite families of quasi-exactly solvable position-dependent mass Schrödinger equations with known ground and first excited states are constructed in a deformed supersymmetric background. The starting points consist in one- and two-parameter trigonometric Pöschl-Teller potentials endowed with a deformed shape invariance property and, therefore, exactly solvable. Some extensions of them are considered with the same position-dependent mass and dealt with by a generating function method. The latter enables to construct the first two superpotentials of a deformed supersymmetric hierarchy, as well as the first two partner potentials and the first two eigenstates of the first potential from some generating function W +(x) (and its accompanying function W -(x) . The generalized trigonometric Pöschl-Teller potentials so obtained are thought to have interesting applications in molecular and solid state physics.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019