Journal
EUROPEAN PHYSICAL JOURNAL E
Volume 41, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1140/epje/i2018-11653-4
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Funding
- Board of College and University Development, Savitribai Phule Pune University
- UGC-FRP
- I.C.T.P. Italy
- University of Trieste, Italy
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We consider the flocking of self-propelling agents in two dimensions, each of which communicates with its neighbors within a limited vision-cone. Also, the communication occurs with some time-delay. The communication among the agents are modeled by Vicsek rules. In this study we explore the combined effect of non-reciprocal interaction (induced by limited vision-cone) among the agents and the presence of delay in the interactions on the dynamical pattern formation within the flock. We find that under these two influences, without any position-based attractive interactions or confining boundaries, the agents can spontaneously condense into drops. Though the agents are in motion within the drop, the drop as a whole is pinned in space. We find that this novel state of the flock has a well-defined order and it is stabilized by the noise present in the system.
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