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arXiv math-ph/0308005math-phmath.MPnlin.CD
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星形图的量子遍历性

No quantum ergodicity for star graphs

G. Berkolaiko, J. P. Keating, B. Winn

摘要:

本文研究了键长为非公度的星图族上薛定谔算子本征函数的统计性质。我们发现,这些本征函数不是量子遍历的限制,债券的数量趋于无穷大,通过找到一个观察到的量子矩阵元素不收敛到经典的平均值。我们进一步表明,对于一个给定的固定图有连续性的本征函数的本地化对债券。我们描述了如何明确地构建这样的连续性。这些结构类似于短的不稳定周期轨道上的疤痕。

英文摘要:

We investigate statistical properties of the eigenfunctions of the Schrodinger operator on families of star graphs with incommensurate bond lengths. We show that these eigenfunctions are not quantum ergodic in the limit as the number of bonds tends to infinity by finding an observable for which the quantum matrix elements do not converge to the classical average. We further show that for a given fixed graph there are subsequences of eigenfunctions which localise on pairs of bonds. We describe how to construct such subsequences explicitly. These constructions are analogous to scars on short unstable periodic orbits.

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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