Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions

The standard Vicsek model (SVM) is a minimal non-equilibrium model of self-propelled particles that appears to capture the essential ingredients of critical flocking phenomena. In the SVM, particles tend to align with each other and form ordered flocks of collective motion; however, perturbations co...

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Detalles Bibliográficos
Autores principales: Baglietto, Gabriel, Albano, Ezequiel Vicente, Candia, Julián Marcelo
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2013
Materias:
Física
Self-propelled particles
Vicsek mode
Flocking
Swarming
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95415
https://ri.conicet.gov.ar/11336/23534
https://arxiv.org/abs/1303.6315
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95415
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Self-propelled particles
Vicsek mode
Flocking
Swarming
spellingShingle Física
Self-propelled particles
Vicsek mode
Flocking
Swarming
Baglietto, Gabriel
Albano, Ezequiel Vicente
Candia, Julián Marcelo
Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
topic_facet Física
Self-propelled particles
Vicsek mode
Flocking
Swarming
description The standard Vicsek model (SVM) is a minimal non-equilibrium model of self-propelled particles that appears to capture the essential ingredients of critical flocking phenomena. In the SVM, particles tend to align with each other and form ordered flocks of collective motion; however, perturbations controlled by a noise term lead to a noisedriven continuous order–disorder phase transition. In this work, we extend the SVM by introducing a parameter α that allows particles to be individualistic instead of gregarious, i.e. to choose a direction of motion independently of their neighbors. By focusing on the small-noise regime, we show that a relatively small probability of individualistic motion (around 10%) is sufficient to drive the system from a Vicsek-like ordered phase to a disordered phase. Despite the fact that the α-extended model preserves the O(n) symmetry and the interaction range, as well as the dimensionality of the underlying SVM, this novel phase transition is found to be discontinuous (first order), an intriguing manifestation of the richness of the non-equilibrium flocking/swarming phenomenon.
format Articulo
Preprint
author Baglietto, Gabriel
Albano, Ezequiel Vicente
Candia, Julián Marcelo
author_facet Baglietto, Gabriel
Albano, Ezequiel Vicente
Candia, Julián Marcelo
author_sort Baglietto, Gabriel
title Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
title_short Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
title_full Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
title_fullStr Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
title_full_unstemmed Gregarious versus individualistic behavior in Vicsek swarms and the onset of first-order phase transitions
title_sort gregarious versus individualistic behavior in vicsek swarms and the onset of first-order phase transitions
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/95415
https://ri.conicet.gov.ar/11336/23534
https://arxiv.org/abs/1303.6315
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