RT Journal Article
T1 Collective motion of energy depot active disks
A1 Miranda, López, Juan
A1 Levis, Demian
A1 Valeriani, Chantal
AB In the present work we have studied collectives of active disks with an energy depot, moving in the two-dimensional plane and interacting via an excluded volume. The energy depot accounts for the extraction of energy taking place at the level of each particle in order to perform self-propulsion, included in an underdamped Langevin dynamics. We show that this model undergoes a flocking transition, exhibiting some of the key features of the Vicsek model, namely, band formation and giant number fluctuations. These bands, either single or multiple, are dense and very strongly polarised propagating structures. Large density bands disappear as the activity is further increased, eventually reaching a homogeneous polar state. We unravel an effective alignment interaction at the level of two-particle collisions that can be controlled by activity and gives rise to flocking at large scales
PB Royal Society of Chemistry
SN 1744-683X
YR 2024
FD 2024-11-18
LK https://hdl.handle.net/20.500.14352/122655
UL https://hdl.handle.net/20.500.14352/122655
LA eng
NO J. P. Miranda, D. Levis and C. Valeriani, Soft Matter, 2025, 21, 1045–1053.
NO Agencia Estatal de Investigación (España)
DS Docta Complutense
RD 26 dic 2025