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arXiv 1806.01341nlin.CD
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受激幂律振荡器

Driven power-law oscillator

Peter Schmelcher

摘要:

我们探讨的非线性动力学驱动的幂律振荡器,其形状随时间周期性变化,涵盖了广泛的非谐性。相空间在单个驱动周期内结合不同几何形状的弱约束和强约束,不仅允许规则和混沌有界运动,而且特别允许表现出相应能量的指数净增长的无界运动。我们的计算研究表明,阶段的运动与能量的增益和损失,以及近似的能量守恒交替在一个单一的周期内的振荡器,并可以分配到底层的限制几何形状的变化。我们演示了如何从一个单一的交叉到一个两个组成部分的相空间发生变化的频率和幅度,并分析相空间中相应的体积。在高频率制度的有效潜力的推导,结合不同的功能驱动的幂律振荡器。可能的实验实现进行了讨论。

英文摘要:

We explore the nonlinear dynamics of a driven power law oscillator whose shape varies periodically in time covering a broad spectrum of anharmonicities. Combining weak and strong confinement of different geometry within a single driving period the phase space allows not only for regular and chaotic bounded motion but in particular also for an unbounded motion which exhibits an exponential net growth of the corresponding energies. Our computational study shows that phases of motion with energy gain and loss as well as approximate energy conservation alternate within a single period of the oscillator and can be assigned to the change of the underlying confinement geometry. We demonstrate how the crossover from a single- to a two-component phase space takes place with varying frequency and amplitude and analyze the corresponding volumes in phase space. In the high frequency regime an effective potential is derived that combines the different features of the driven power-law oscillator. Possible experimental realizations are discussed.

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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