Formation and collision of traveling bands in interacting deformable self-propelled particles.
Formation and collision of traveling bands in interacting deformable self-propelled particles.
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DOI：
10.1103/physreve.89.012918
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发表时间：
2013-07
期刊：
影响因子：
--
通讯作者：
Sadato Yamanaka;T. Ohta
中科院分区：
文献类型：
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作者：
Sadato Yamanaka;T. Ohta
我们研究了相互作用的可变形自推进粒子的集体动力学，这些粒子的迁移速度随着局部密度的增加而增加。在对该系统的二维数值模拟中，局域密度对迁移速度的依赖导致了类似于先前报道的Vicsek型模型的行波带。我们证明了一对向相反方向移动的直线带在迎头碰撞中幸存下来。尽管在受随机噪声影响的恒定迁移速度系统中也出现了行波带，但在迎头碰撞中它们是不稳定的。
We study the collective dynamics of interacting deformable self-propelled particles whose migration velocity increases with increasing local density. In two-dimensional numerical simulations of this system, the local density dependence on migration velocity leads to traveling bands similar to those previously reported for Vicsek-type models. We show that a pair of straight bands moving in opposite directions survives a head-on collision. Although traveling bands also appear in systems of constant migration velocity subjected to random noise, they are found to be unstable in a head-on collision.