Transport driven by spatially modulated noise in a periodic tube

Transport driven by spatially modulated noise in a periodic tube
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周期管中空间调制噪声驱动的传输

DOI:
10.1088/0953-8984/19/26/266215
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发表时间:
2007-06
影响因子:
2.7
通讯作者:
Ai, Bao-Quan
Ai, Bao-Quan
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu, Liang-Gang;Ai, Bao-Quan

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研究了空间调制高斯白色噪声驱动的三维周期管。通过引入熵垒,我们导出了净电流的解析表达式。研究发现,完全对称管和噪声调制之间的相移可以打破广义势的对称性,诱导定向输运。电流的符号由相移决定。电流是瓶颈半径的峰值函数。非对称管和噪声调制之间的相互作用也可以引起净电流。
This paper investigates a three-dimensional periodic tube driven by spatially modulated Gaussian white noise. We derive an analytical expression for the net current by introducing entropic barriers. It is found that the phase shift between the entirely symmetric tube and noise modulation can break the symmetry of the generalized potential and induce directed transport. The sign of the current is determined by the phase shift. The current is a peaked function of the bottleneck radius. The interplay between the asymmetric tube and noise modulation can also induce a net current.
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影响因子: --
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