RT Journal Article
T1 Contrarian compulsions produce exotic time-dependent flocking of active particles
A1 López Bonilla, Luis Francisco
A1 Trenado Yuste, Carolina
AB Animals having a tendency to align their velocities to an average of those of their neighbors may flock as illustrated by the Vicsek model and its variants. If, in addition, they feel a systematic contrarian trend, the result may be a time periodic adjustment of the flock or period doubling in time. These exotic phases are predicted from kinetic theory and numerically found in a modified two-dimensional Vicsek model of self-propelled particles. Numerical simulations demonstrate striking effects of alignment noise on the polarization order parameter measuring particle flocking: maximum polarization length is achieved at an optimal nonzero noise level. When contrarian compulsions are more likely than conformist ones, nonuniform polarized phases appear as the noise surpasses threshold.
PB American Physical Society
SN 2470-0045
YR 2019
FD 2019-01-29
LK https://hdl.handle.net/10016/31438
UL https://hdl.handle.net/10016/31438
LA eng
NO We thank A. Lasanta for useful comments and for bringing the kinetic theory work of Ihle and collaborators to our attention. This work has been supported by the Ministerio de Economía y Competitividad Grants No. MTM2014-56948-C2-2-P and No. MTM2017-84446-C2-2-R. L.L.B. thanks R. Caflisch for hospitality during a sabbatical stay at the Courant Institute and acknowledges support of the Ministerio de Ciencia, Innovación y Universidades “Salvador de Madariaga” Grant No. PRX18/00166.
DS e-Archivo
RD 27 jul. 2024