TY  - JOUR
AU  - Xue, Tingting
AU  - Li, Xu
AU  - Grassberger, Peter
AU  - Chen, Li
TI  - Swarming transitions in hierarchical societies
JO  - Physical review research
VL  - 2
IS  - 4
SN  - 2643-1564
CY  - College Park, MD
PB  - APS
M1  - FZJ-2021-04377
SP  - 042017
PY  - 2020
AB  - Social hierarchy is central to decision-making in the coordinated movement of many swarming species. Here we propose a hierarchical swarm model in the spirit of the Vicsek model of self-propelled particles. We show that, as the hierarchy becomes important, the swarming transition changes from the weak first-order transition observed for egalitarian populations, to a stronger first-order transition for intermediately strong hierarchies, and finally the discontinuity reduces until vanish, where the order-disorder transition appears to be absent in the extremely despotic societies. Associated to this we observe that the spatial structure of the swarm, as measured by the correlation between the density and velocity fields, is strongly mediated by the hierarchy. A two-group model and vectorial noise are also studied for verification. Our results point out the particular relevance of the hierarchical structures to swarming transitions when doing specific case studies.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000605398900001
DO  - DOI:10.1103/PhysRevResearch.2.042017
UR  - https://juser.fz-juelich.de/record/902578
ER  -