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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| Published in: | Physical review letters Vol. 133; no. 5 |
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| Main Authors: | , , , |
| Format: | Paper Journal Article |
| Language: | English |
| Published: |
Ithaca
Cornell University Library, arXiv.org
01.08.2024
American Physical Society |
| Subjects: | |
| ISSN: | 0031-9007, 2331-8422, 1079-7114 |
| Online Access: | Get full text |
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| Summary: | 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. |
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| Bibliography: | 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 |