Spectrum generating algebras for position-dependent mass oscillator Schrodinger equations

Details Spectrum generating algebras for position-dependent mass oscillator Schrodinger equations Spectrum generating algebras for position-dependent mass oscillator Schrodinger equations

2007-05-07

arxiv.org/abs/0705.0862v3

J. Phys. A: Math. Theor. 40 (2007) 13107-13119

Physics

Mathematical Physics

21 pages, no figure, 2 misprints corrected; published version

Scientific paper

10.1088/1751-8113/40/43/018

The interest of quadratic algebras for position-dependent mass Schr\"odinger equations is highlighted by constructing spectrum generating algebras for a class of d-dimensional radial harmonic oscillators with $d \ge 2$ and a specific mass choice depending on some positive parameter $\alpha$. Via some minor changes, the one-dimensional oscillator on the line with the same kind of mass is included in this class. The existence of a single unitary irreducible representation belonging to the positive-discrete series type for $d \ge 2$ and of two of them for d=1 is proved. The transition to the constant-mass limit $\alpha \to 0$ is studied and deformed su(1,1) generators are constructed. These operators are finally used to generate all the bound-state wavefunctions by an algebraic procedure.

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