A generic coupling between internal states and activity leads to activation fronts and criticality in active systems

To understand the onset of collective motion, we investigate active systems where particles switch on and off their self-propulsion. We prove that even when the only possible transition is off\(\to\)on, an active 2-state system behaves as an effective 3-state system that exhibits a sharp phase trans...

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Veröffentlicht in:Physical review letters Jg. 133; H. 5
Hauptverfasser: Hadrien-Matthieu Gascuel, Rahmani, Parisa, Bon, Richard, Peruani, Fernando
Format: Paper Journal Article
Sprache:Englisch
Veröffentlicht: Ithaca Cornell University Library, arXiv.org 01.08.2024
American Physical Society
Schlagworte:
Coupling
Physics
ISSN:0031-9007, 2331-8422, 1079-7114
Online-Zugang:Volltext
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Zusammenfassung:To understand the onset of collective motion, we investigate active systems where particles switch on and off their self-propulsion. We prove that even when the only possible transition is off\(\to\)on, an active 2-state system behaves as an effective 3-state system that exhibits a sharp phase transition in 1D, and critical behavior in 2D, with scale-invariant activity avalanches. The obtained results show how criticality can naturally emerge in active systems, providing insight into the way collectives distribute, process, and respond to local environmental cues.
Bibliographie:SourceType-Working Papers-1
ObjectType-Working Paper/Pre-Print-1
content type line 50
ISSN:0031-9007
2331-8422
1079-7114
DOI:10.48550/arxiv.2311.06208