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arXiv 0804.1551nlin.CD
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三维混沌台球中的弹跳球轨道和对称性破缺效应

Bouncing ball orbits and symmetry breaking effects in a three-dimensional chaotic billiard

B. Dietz, B. Moessner, T. Papenbrock, U. Reif, A. Richter

摘要:

我们研究了三维体育场台球的经典力学和量子力学。它由两个四分之一圆柱体组成,它们相互旋转90度,它是经典的混沌。台球展品只有几个家庭的非通用周期轨道。我们介绍了一种分析方法,他们的治疗。长度谱可以用非一般的不稳定周期轨道来理解。对于不等半径的四分之一圆柱体的水平统计同意以及从随机矩阵理论的预测。当半径相等时,台球又有一种对称性。我们研究了对称性破缺对光谱性质的影响。此外,对于相等的半径,我们观察到一个小的偏差的水平统计随机矩阵理论。这导致了稳定和边缘稳定的轨道的发现,这是不存在的不相等的半径。

英文摘要:

We study the classical and quantum mechanics of a three-dimensional stadium billiard. It consists of two quarter cylinders that are rotated with respect to each other by 90 degrees, and it is classically chaotic. The billiard exhibits only a few families of nongeneric periodic orbits. We introduce an analytic method for their treatment. The length spectrum can be understood in terms of the nongeneric and unstable periodic orbits. For unequal radii of the quarter cylinders the level statistics agree well with predictions from random matrix theory. For equal radii the billiard exhibits an additional symmetry. We investigated the effects of symmetry breaking on spectral properties. Moreover, for equal radii, we observe a small deviation of the level statistics from random matrix theory. This led to the discovery of stable and marginally stable orbits, which are absent for un equal radii.

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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