Active and passive particles: Modeling beads in a bacterial bath

被引：67

作者：

Grégoire, G. ^{[1
]}

Chaté, H. ^{[1
]}

Tu, Y. ^{[1
]}

机构：

[1] CEA, Service De Phys. De l'Etat Condense, Centre d'Etudes De Saclay, 91191, Gif-sur-Yvette, France

来源：

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | 2001年 / 64卷 / 1 I期

关键词：

Bacteria - Bacteriology - Computer simulation - Hydrodynamics - Mathematical models - Particles (particulate matter) - Phase transitions - Polystyrenes;

D O I：

10.1103/PhysRevE.64.011902

中图分类号：

学科分类号：

摘要：

A simple model for the motion of passive beads in a noisy bath of active boids interacting only locally is introduced. First, it is shown that under very general assumptions, the beads reproduce the diffusive properties of individual bacteria. Following this, it is argued that the variation of crossover scales observed by Wu and Libchaber (WL) corresponds to the onset of long-range orientational order proven recently to exist in minimal models for collective motion. In this framework, crossover scales are expected to diverge at the critical point and true anomalous diffusion at all scales is then observed.

引用

页码：1 / 011902