Anomalous diffusion of active Brownian particles in responsive elastic gels: Nonergodicity, non-Gaussianity, and distributions of trapping times

Goswami, Koushik; Cherstvy, Andrey G.; Godec, Aljaz; Metzler, Ralf

doi:10.1103/physreve.110.044609

Phys. Rev. E

2024

DOI: 10.1103/physreve.110.044609

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Anomalous diffusion of active Brownian particles in responsive elastic gels: Nonergodicity, non-Gaussianity, and distributions of trapping times

Koushik Goswami,

Andrey G. Cherstvy,

Aljaz Godec

et al.

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Cited by 2 publications

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Progress in Rheology of Active Colloidal Systems

John,

Panahi,

et al. 2024

Current Opinion in Colloid & Interface Science

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Progress in Rheology of Active Colloidal Systems

John,

Panahi,

et al. 2024

Current Opinion in Colloid & Interface Science

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Random walks of intermittently self-propelled particles

Datta,

Beta,

Großmann

2024

Phys. Rev. Research

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Motivated by various recent experimental findings, we propose a dynamical model of intermittently self-propelled particles: active particles that recurrently switch between two modes of motion, namely an active run state and a turn state, in which self-propulsion is absent. The durations of these motility modes are drawn from arbitrary waiting-time distributions. We derive the expressions for exact forms of transport characteristics like mean-square displacements and diffusion coefficients to describe such processes. Furthermore, the conditions for the emergence of sub- and superdiffusion in the long-time limit are presented. We give examples of some important processes that occur as limiting cases of our system, including run-and-tumble motion of bacteria, Lévy walks, hop-and-trap dynamics, intermittent diffusion and continuous-time random walks. Published by the American Physical Society 2024

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Anomalous diffusion of active Brownian particles in responsive elastic gels: Nonergodicity, non-Gaussianity, and distributions of trapping times

Cited by 2 publications

References 223 publications

Progress in Rheology of Active Colloidal Systems

Progress in Rheology of Active Colloidal Systems

Random walks of intermittently self-propelled particles

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