A general scheme for the effective-mass Schrodinger equation and the generation of the associated potentials

Details A general scheme for the effective-mass Schrodinger equation and the generation of the associated potentials A general scheme for the effective-mass Schrodinger equation and the generation of the associated potentials

2004-05-31

arxiv.org/abs/quant-ph/0405193v3

Mod. Phys. Lett. A 19 (2004) 2765-2775

Physics

Quantum Physics

16 pages + 1 figure; minor changes + new "free-particle" problem; version published in Mod. Phys. Lett. A

Scientific paper

10.1142/S0217732304016123

A systematic procedure to study one-dimensional Schr\"odinger equation with a position-dependent effective mass (PDEM) in the kinetic energy operator is explored. The conventional free-particle problem reveals a new and interesting situation in that, in the presence of a mass background, formation of bound states is signalled. We also discuss coordinate-transformed, constant-mass Schr\"odinger equation, its matching with the PDEM form and the consequent decoupling of the ambiguity parameters. This provides a unified approach to many exact results known in the literature, as well as to a lot of new ones.

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