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Environmental path-entropy and collective motion
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Devereux, Harvey L. and Turner, Matthew S. (2023) Environmental path-entropy and collective motion. Physical Review Letters, 130 (16). 168201. doi:10.1103/PhysRevLett.130.168201 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.130.168201
Abstract
Inspired by the swarming or flocking of animal systems we study groups of agents moving in unbounded 2D space. Individual trajectories derive from a "bottom-up" principle: individuals reorient to maximize their future path entropy over environmental states. This can be seen as a proxy for keeping options open, a principle that may confer evolutionary fitness in an uncertain world. We find an ordered (coaligned) state naturally emerges, as well as disordered states or rotating clusters; similar phenotypes are observed in birds, insects, and fish, respectively. The ordered state exhibits an order-disorder transition under two forms of noise: (i) standard additive orientational noise, applied to the postdecision orientations and (ii) "cognitive" noise, overlaid onto each individual's model of the future paths of other agents. Unusually, the order increases at low noise, before later decreasing through the order-disorder transition as the noise increases further.
Item Type: | Journal Article | ||||||
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Subjects: | H Social Sciences > HM Sociology Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics Faculty of Science, Engineering and Medicine > Science > Physics |
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SWORD Depositor: | Library Publications Router | ||||||
Library of Congress Subject Headings (LCSH): | Collective behavior -- Mathematical models, Mathematical physics, Entropy | ||||||
Journal or Publication Title: | Physical Review Letters | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 0031-9007 | ||||||
Official Date: | 21 April 2023 | ||||||
Dates: |
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Volume: | 130 | ||||||
Number: | 16 | ||||||
Article Number: | 168201 | ||||||
DOI: | 10.1103/PhysRevLett.130.168201 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Re-use Statement: | ** From PubMed via Jisc Publications Router ** History: received 29-09-2022; revised 18-01-2023; accepted 28-03-2023. | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 17 July 2023 | ||||||
Date of first compliant Open Access: | 17 July 2023 | ||||||
RIOXX Funder/Project Grant: |
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