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arXiv 1808.09175quant-ph
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自由粒子与椭球面上各向同性谐振子:类Higgs方法

Free particle and isotropic harmonic oscillator on a spheroidal surface: the Higgs-like approach

Ali Mahdifar, Ehsan Amooghorban

摘要:

在本文中,我们研究了自由粒子和各向同性谐振子的动力学约束在一个球体表面上使用两个连续的投影:一个投影到球表面上,然后在球的切平面上的球心投影。我们得到了上述系统的哈密顿量的切平面的笛卡尔坐标,然后在标准的方法。结果表明,表面非球度的影响可以看作是一个有效势的出现。本文利用椭球二阶偏心率下的一阶微扰理论,近似计算了自由粒子的本征函数和本征值,以及椭球面上各向同性谐振子的本征值。我们发现偏离球度对球上各向同性振子的能级分裂和简并度的提升起着重要的作用。

英文摘要:

In this paper, we investigate the dynamics of both free particle and isotropic harmonic oscillator constrained to move on a spheroidal surface using two consecutive projections: a projection onto a sphere surface followed by the gnomonic projection onto a tangent plane to the spheroid. We obtain the Hamiltonian of the aforementioned systems in terms of the Cartesian coordinates of the tangent plane and then quantize it in the standard way. It is shown that the effect of non-sphericity of the surface can be treated as the appearance of an effective potential. By using the perturbation theory up to the first order in second eccentricity of the spheroid, we approximately calculate the eigenfunctions and eigenvalues of the free particle, as well as the isotropic harmonic oscillator on the spheroidal surface. We find that the deviation from the sphericity plays an important role in splitting the energy levels of the isotropic oscillator on a sphere, and lifting the degeneracy.

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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