Brownian parametric oscillators.

Brownian parametric oscillators.
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布朗参量振荡器。

DOI:
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发表时间:
1994
期刊:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
影响因子:
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通讯作者:
P. Hänggi
P. Hänggi
中科院分区:
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文献类型:
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作者:
Christine Zerbe;Peter Jung;P. Hänggi

文献摘要

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我们讨论了耗散,白噪声驱动的Floquet振荡器的随机动力学,其特征在于由一个时间周期性的刚度。到目前为止,很少有人注意到这些精确可解的非定常系统,虽然他们进行了几个实验应用丰富的潜力。在这里,我们计算和讨论的均值和方差,以及相关函数和Floquet频谱。作为一个主要的结果,我们发现某些参数值的位置坐标的波动被抑制相比,谐振子的平衡值(参数压缩)。
We discuss the stochastic dynamics of dissipative, white-noise-driven Floquet oscillators, characterized by a time-periodic stiffness. Thus far, little attention has been paid to these exactly solvable nonstationary systems, although they carry a rich potential for several experimental applications. Here, we calculate and discuss the mean values and variances, as well as the correlation functions and the Floquet spectrum. As one main result, we find for certain parameter values that the fluctuations of the position coordinate are suppressed as compared to the equilibrium value of a harmonic oscillator (parametric squeezing).