### 抜粋

An Ising-type Vicsek model is proposed for collective motion and sudden direction change in a population of self-propelled particles. Particles move on a linear lattice with velocity +1 or -1 in the one-dimensional model. The probability of the velocity of a particle at the next step is determined by the number difference of the right- and left-moving particles at the present lattice site and its nearest-neighboring sites. A solitary wave appears also in our model similarly to previous models. In some parameter range, the moving direction of the solitary wave sometimes changes rather suddenly, which is like the sudden change of direction of a flock of birds. We study the average reversal time of traveling direction numerically and compare the results with a mean-field theory. The one-dimensional model is generalized to a two-dimensional model. Flip motion of a bandlike soliton is observed in the two-dimensional model.

元の言語 | 英語 |
---|---|

記事番号 | 052113 |

ジャーナル | Physical Review E |

巻 | 100 |

発行部数 | 5 |

DOI | |

出版物ステータス | 出版済み - 11 14 2019 |

### フィンガープリント

### All Science Journal Classification (ASJC) codes

- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics

### これを引用

*Physical Review E*,

*100*(5), [052113]. https://doi.org/10.1103/PhysRevE.100.052113