Yamanaka Sadato, Ohta Takao
Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan.
Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan and Toyota Physical and Chemical Research Institute, Nagakute, Aichi 480-1192, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Oct;90(4):042927. doi: 10.1103/PhysRevE.90.042927. Epub 2014 Oct 29.
We study the soliton-like character of traveling bands in systems of interacting deformable self-propelled particles in two dimensions. The collision dynamics of the model in which migration velocity increases with increasing local density is investigated numerically by changing the relaxation rate of deformations. The bands are unstable upon head-on collisions for larger relaxation rates. This clearly indicates that deformability plays a crucial role of the soliton-like behavior.
我们研究二维中相互作用的可变形自推进粒子系统中传播带的类孤子特性。通过改变变形的弛豫率，对迁移速度随局部密度增加而增加的模型的碰撞动力学进行了数值研究。对于较大的弛豫率，这些带在正面碰撞时是不稳定的。这清楚地表明，可变形性对类孤子行为起着关键作用。
