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arXiv 1606.00364nlin.CD
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体育场台球中的旋转泄漏

Rotating Leaks in the Stadium Billiard

Brian D. Appelbe

摘要:

开放式体育场台球具有存活概率$P(t)$,其取决于颗粒通过泄漏的逃逸速率。已知的是,$P(t)$的衰减在时间早期是指数的,而对于长时间,衰减遵循幂律。在这项工作中,我们调查了一个开放的体育场台球,其中泄漏是自由旋转的边界周围的体育场以恒定的速度,$ω$。发现$P(t)$对$ω$非常敏感。对于某些$ω$值,$P(t)$是纯指数的,而对于其他值,长期保持幂律行为。我们确定了三个范围的$ω$值对应于三个不同的响应$P(t)$。结果表明,这些变化在$P(t)$是由于移动泄漏的相互作用与边缘不稳定周期轨道(MUPO)。

英文摘要:

The open stadium billiard has a survival probability, $P(t)$, that depends on the rate of escape of particles through the leak. It is known that the decay of $P(t)$ is exponential early in time while for long times the decay follows a power law. In this work we investigate an open stadium billiard in which the leak is free to rotate around the boundary of the stadium at a constant velocity, $ω$. It is found that $P(t)$ is very sensitive to $ω$. For certain $ω$ values $P(t)$ is purely exponential while for other values the power law behaviour at long times persists. We identify three ranges of $ω$ values corresponding to three different responses of $P(t)$. It is shown that these variations in $P(t)$ are due to the interaction of the moving leak with Marginally Unstable Periodic Orbits (MUPOs).

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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