Chaotic Model for Lévy Walks in Swarming Bacteria

Gil Ariel; Avraham Be'Er; Andy Reynolds

doi:https://doi.org/10.1103/PhysRevLett.118.228102

Chaotic Model for Lévy Walks in Swarming Bacteria

Gil Ariel, Avraham Be'Er, Andy Reynolds

Bar-Ilan University, Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

We describe a new mechanism for Lévy 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 Lévy 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.

Original language	English
Article number	228102
Journal	Physical Review Letters
Volume	118
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.118.228102
State	Published - 2 Jun 2017

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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https://doi.org/10.1103/PhysRevLett.118.228102

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title = "Chaotic Model for L{\'e}vy Walks in Swarming Bacteria",

abstract = "We describe a new mechanism for L{\'e}vy 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 L{\'e}vy 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.",

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Chaotic Model for Lévy Walks in Swarming Bacteria

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