Order-disorder transition and phase separation in delay Vicsek model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10506780" target="_blank" >RIV/00216208:11320/25:10506780 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Gm.HD5ZkDn" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Gm.HD5ZkDn</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1367-2630/ae02be" target="_blank" >10.1088/1367-2630/ae02be</a>
Alternative languages
Result language
angličtina
Original language name
Order-disorder transition and phase separation in delay Vicsek model
Original language description
Interactions in active matter systems inherently involve delays due to information processing and actuation lags. We numerically investigate the impact of such delays on the phase behavior of the Vicsek model for motile active matter at a large but fixed system size. While the delayed Vicsek model retains the same three phases as the standard version-an ordered state, a liquid-gas coexistence state, and a disordered state-the presence of delay qualitatively alters the system's dynamics. At the relatively high velocity considered in this study, the critical noise for the transition between the ordered and coexistence states exhibits a non-monotonic dependence on delay, whereas the critical noise required for the transition to the disordered state increases with delay. Consequently, the width of the noise interval in which phase separation occurs broadens with increasing delay. Short delays stabilize the ordered phase, while long delays destabilize it in favor of the coexistence phase, which is consistently stabilized compared to the disordered state. Furthermore, the number of bands observed in the coexistence state at a given noise increases, and the time required for their formation decreases with delay. This acceleration is attributed to the emergence of swirling structures whose typical radius grows with increasing delay. Our results demonstrate that time delay in the Vicsek model acts as an effective control parameter for tuning the system's dynamic phase behavior.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Journal of Physics
ISSN
1367-2630
e-ISSN
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Volume of the periodical
27
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
094402
UT code for WoS article
001574160700001
EID of the result in the Scopus database
2-s2.0-105016373843