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arXiv 1006.2629nlin.CD
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耗散驱动椭圆台球中的相空间聚焦

Phase space focusing in dissipative driven elliptical billiards

Christoph Petri, Florian Lenz, Fotis Diakonos, Peter Schmelcher

摘要:

我们研究了椭圆台球中耗散和谐波驱动的相互作用。这两个相互竞争的过程相互平衡,导致费米加速度的破坏,从而导致系综平均速度的饱和。特别是,动力学吸引子的出现使系综集中在相空间的某些部分。单个吸引子的数量可以通过在台球边界的某些部分添加小的双曲元素来控制。此外,吸引子在动量空间中的位置可以通过调节参数如耗散常数或驱动振幅和频率来调节。因此,耗散的,驱动的椭圆台球代表了一个强大的工具,颗粒制备。

英文摘要:

We study the interplay of dissipation and harmonic driving in the elliptical billiard. These two competing processes balance each other, which leads to a destruction of Fermi acceleration and thus to a saturation of the ensemble averaged velocity. In particular, the emergence of dynamical attractors sharply focuses the ensemble onto certain parts of phase space. The population of individual attractors can be controlled by adding small hyperbolic elements to certain parts of the boundary of the billiard. Furthermore, the position of the attractors in momentum space can be adjusted by tuning parameters like the dissipation constant or the driving amplitude and frequency. Thus, the dissipative, driven elliptical billiard represents a powerful tool for particle preparation.

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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