TY - JOUR
T1 - Solitary Wave States Maintained by Stochastic Direction Changes in a Population of Self-Propelled Particles
AU - Ishibashi, Kazuya
AU - Sakaguchi, Hidetsugu
N1 - Publisher Copyright:
© 2022 The Physical Society of Japan
PY - 2022/3/15
Y1 - 2022/3/15
N2 - We study solitary wave states of self-propelled particles in the Ising-type Vicsek model. A strongly localized state appears after the rapid direction change of collective motion in the one-dimensional Ising-type Vicsek model. It is shown that this phenomenon occurs by the nucleation of a small population moving in the opposite direction and the subsequent sweeping-up process. This formation mechanism of the solitary wave state is different from the motility-induced phase separation. The solitary wave states maintained by stochastic direction changes also appear on triangular and square lattices in two dimensions.
AB - We study solitary wave states of self-propelled particles in the Ising-type Vicsek model. A strongly localized state appears after the rapid direction change of collective motion in the one-dimensional Ising-type Vicsek model. It is shown that this phenomenon occurs by the nucleation of a small population moving in the opposite direction and the subsequent sweeping-up process. This formation mechanism of the solitary wave state is different from the motility-induced phase separation. The solitary wave states maintained by stochastic direction changes also appear on triangular and square lattices in two dimensions.
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U2 - 10.7566/JPSJ.91.034003
DO - 10.7566/JPSJ.91.034003
M3 - Article
AN - SCOPUS:85124587206
VL - 91
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
M1 - 034003
ER -