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arXiv quant-ph/0504074quant-ph
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等势的量子谱

On the quantum spectrum of isochronous potentials

J. Dorignac

摘要:

本文研究了等熵势的量子谱。由于这种势中经典运动的频率是与能量无关的,所以很自然地期望它们的量子谱是等间距的。然而,正如在一些具体示例中已经表明的那样,该属性并不总是正确的。为了获得一些一般的洞察这个问题,WKB分析的频谱,有效的任何分析潜力,进行和第一次半经典修正,其定期间距计算。本文给出了文[1]中导出的两参数等势族的结果,其中包括谐振子、非对称抛物势阱、径向谐振子和Urabe势作为特殊的极限情形。此外,用上述方法导出了等势族及其谱的一些新的解析表达式。

英文摘要:

In this paper, the quantum spectrum of isochronous potentials is investigated. Given that the frequency of the classical motion in such potentials is energy-independent, it is natural to expect their quantum spectra to be equispaced. However, as it has already been shown in some specific examples, this property is not always true. To gain some general insight into this problem, a WKB analysis of the spectrum, valid for any analytic potential, is performed and the first semiclassical corrections to its regular spacing are calculated. We illustrate the results on the two-parameter family of isochronous potentials derived in [1], which includes the harmonic oscillator, the asymmetric parabolic well, the radial harmonic oscillator and Urabe's potential as special limiting cases. In addition, some new analytical expressions for families of isochronous potentials and their corresponding spectra are derived by means of the above-mentioned method.

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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