Chaotic Model for Levy Walks in Swarming Bacteria

被引：34

作者：

Ariel, Gil ^{[1
]}

Be'er, Avraham ^{[2
]}

Reynolds, Andy ^{[3
]}

机构：

[1] Bar Ilan Univ, Dept Math, IL-52000 Ramat Gan, Israel

[2] Ben Gurion Univ Negev, Zuckerberg Inst Water Res, Jacob Blaustein Inst Desert Res, Sede Boqer Campus, IL-84990 Midreshet Ben Gurion, Israel

[3] Rothamsted Res, Harpenden AL5 2JQ, Herts, England

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 22期

基金：

美国国家科学基金会; 以色列科学基金会; 英国生物技术与生命科学研究理事会;

关键词：

ANOMALOUS DIFFUSION; DYNAMICS; TRANSPORT; FLIGHTS; NOISE; SUPERDIFFUSION; DISTRIBUTIONS; PARTICLES; PATTERNS; FLOW;

D O I：

10.1103/PhysRevLett.118.228102

中图分类号：

O4 [物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We describe a new mechanism for Levy walks, explaining the recently observed superdiffusion of swarming bacteria. The model hinges on several key physical properties of bacteria, such as an elongated cell shape, self-propulsion, and a collectively generated regular vortexlike flow. In particular, chaos and Levy walking are a consequence of group dynamics. The model explains how cells can fine-tune the geometric properties of their trajectories. Experiments confirm the spectrum of these patterns in fluorescently labeled swarming Bacillus subtilis.

引用

页数：6

共 67 条

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Model for dynamical coherence in thin films of self-propelled microorganisms [J].