SUPA, School of Physics and Astronomy, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom.
Phys Rev Lett. 2012 Jun 15;108(24):248101. doi: 10.1103/PhysRevLett.108.248101.
We study the behavior of interacting self-propelled particles, whose self-propulsion speed decreases with their local density. By combining direct simulations of the microscopic model with an analysis of the hydrodynamic equations obtained by explicitly coarse graining the model, we show that interactions lead generically to the formation of a host of patterns, including moving clumps, active lanes, and asters. This general mechanism could explain many of the patterns seen in recent experiments and simulations.
我们研究了相互作用的自主运动粒子的行为，这些粒子的自主运动速度随着其局部密度的增加而降低。通过将微观模型的直接模拟与通过显式粗粒化模型获得的流体力学方程的分析相结合，我们表明相互作用通常会导致形成许多模式，包括移动的团块、活性车道和星团。这种一般机制可以解释许多最近的实验和模拟中观察到的模式。
