Collision dynamics of traveling bands in systems of deformable self-propelled particles.
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.
Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan.
Sadato
S
Yamanaka
Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan and Toyota Physical and Chemical Research Institute, Nagakute, Aichi 480-1192, Japan.
Takao
T
Ohta