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arXiv 0705.0862math-phmath.MPmath.QAquant-ph
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位置相关质量振子Schrodinger方程的谱生成代数

Spectrum generating algebras for position-dependent mass oscillator Schrodinger equations

C. Quesne

摘要:

通过构造一类具有$d \ge 2$的d维径向谐振子的谱生成代数,并根据正参数$α$选择特定的质量,突出了二次代数对位置相关质量薛定谔方程的研究兴趣.通过一些微小的变化,具有相同质量的线上的一维振子也包括在这一类中。证明了对于$d \ge 2$存在一个正离散级数型酉不可约表示,对于d=1,存在两个正离散级数型酉不可约表示.研究了向等质量极限$α\to 0$的跃迁,构造了形变SU(1,1)生成元.最后用这些算子通过代数方法生成所有的束缚态波函数。

英文摘要:

The interest of quadratic algebras for position-dependent mass Schrödinger 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 $α$. 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 $α\to 0$ 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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