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arXiv 1208.2109quant-ph
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位置相关的质量谐振子:经典-量子力学对应和有序-歧义

Position-dependent mass harmonic oscillator: classical-quantum mechanical correspondence and ordering-ambiguity

Omar Mustafa

摘要:

我们回收克鲁兹等人。的(Phys. Lett. A 369(2007)400)在经典和量子位置相关质量(PDM)振荡器上的工作。为了详细说明有序的模糊性,我们适当地修改了他们工作中报道的一些结果,并讨论了PDM谐振子的经典和量子力学对应。我们使用一个点正则变换,并证明了一个唯一的量子PDM振子哈密顿量(因此,一个唯一的有序模糊参数集j=l=-1/4和k=-1/2)。为了表明这样的参数集不仅仅是量子PDM振子哈密顿量的表现形式,我们考虑准自由PDM粒子在其自身PDM力场的影响下运动的经典和量子力学对应。

英文摘要:

We recycle Cruz et al.'s (Phys. Lett. A 369 (2007) 400) work on the classical and quantum position-dependent mass (PDM) oscillators. To elaborate on the ordering ambiguity, we properly amend some of the results reported in their work and discuss the classical and quantum mechanical correspondence for the PDM harmonic oscillators. We use a point canonical transformation and show that one unique quantum PDM oscillator Hamiltonian (consequently, one unique ordering-ambiguity parametric set j=l=-1/4 and k=-1/2) is obtained. To show that such a parametric set is not just a manifestation of the quantum PDM oscillator Hamiltonian, we consider the classical and quantum mechanical correspondence for quasi-free PDM particles moving under the influence of their own PDM force fields.

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