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Asynchrony induces ...
Asynchrony induces polarization in attraction-based models of collective motion
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- Strömbom, Daniel (författare)
- Uppsala universitet,Tillämpad matematik och statistik,Lafayette Coll, Dept Biol, Easton, PA 18042 USA;Swansea Univ, Coll Sci, Dept Biosci, Swansea SA2 6PP, W Glam, Wales
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- Hassan, Tasnia (författare)
- Lafayette Coll, Dept Biol, Easton, PA 18042 USA
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- Greis, W. Hunter (författare)
- Lafayette Coll, Dept Biol, Easton, PA 18042 USA
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- Antia, Alice (författare)
- Carleton Coll, Dept Math & Stat, Northfield, MN 55057 USA
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(creator_code:org_t)
- 2019-04-24
- 2019
- Engelska.
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Ingår i: Royal Society Open Science. - : ROYAL SOC. - 2054-5703. ; 6:4
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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Abstract
Ämnesord
Stäng
- Animal groups frequently move in a highly organized manner, as represented by flocks of birds and schools of fish. Despite being an everyday occurrence, we do not fully understand how this works. In particular, what social interactions between animals give rise to the flock structures we observe? This question is often investigated using self-propelled particle models where particles represent the individual animals. These models differ in the social interactions used, individual particle properties, and various technical assumptions. One particular technical assumption relates to whether all particles update their headings and positions at exactly the same time (synchronous update) or not (asynchronous update). Here, we investigate the causal effects of this assumption in an attraction-only model and find that it has a dramatic impact. Polarized groups do not form when synchronous update is used, but are produced with asynchronous update, and this phenomenon is robust with respect to variation in particle displacements and inclusion of noise. Given that many important models have been implemented with synchronous update only, we speculate that our understanding of the social interactions on which they are based may be incomplete. Perhaps previously unobserved phenomena will emerge if other potentially more realistic update schemes are used.
Ämnesord
- NATURVETENSKAP -- Matematik -- Annan matematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Other Mathematics (hsv//eng)
Nyckelord
- self-propelled particles
- synchrony
- self-organization
- flocking
- collective behaviour
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