Self-reinforcing directionality generates truncated Lévy walks without the power-law assumption.
Self-reinforcing directionality generates truncated Lévy walks without the power-law assumption.
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自我强化的方向性会在没有幂律假设的情况下生成截断的 Lévy 游走。
DOI:
10.1103/physreve.103.022132
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Han D
中科院分区:
文献类型:
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作者:
Han D
We introduce a persistent random walk model with finite velocity and self-reinforcing directionality, which explains how exponentially distributed runs self-organize into truncated Lévy walks observed in active intracellular transport by Chenet al.[Nature Mater., 14, 589 (2015)10.1038/nmat4239]. We derive the nonhomogeneous in space and time, hyperbolic partial differential equation for the probability density function (PDF) of particle position. This PDF exhibits a bimodal density (aggregation phenomena) in the superdiffusive regime, which is not observed in classical linear hyperbolic and Lévy walk models. We find the exact solutions for the first and second moments and criteria for the transition to superdiffusion.
DOI:
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发表时间:
2009
期刊:
影响因子:
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作者:
J. G. Gindhart;K. Weber
通讯作者:
K. Weber