Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear

The effects of an externally imposed linear shear profile in the Vicsek model of self-propelled particles is investigated via computer simulations. We find that the applied field changes in a relevant way both the equilibrium and dynamical properties of the original model. Indeed, short time dynamic...

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Autores principales: Saracco, Gustavo Pablo, Gonnella, Giuseppe, Marenduzzo, Davide, Orlandini, Enzo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Física
active matter
non-equilibrium physics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/114723
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-114723
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
active matter
non-equilibrium physics
spellingShingle Física
active matter
non-equilibrium physics
Saracco, Gustavo Pablo
Gonnella, Giuseppe
Marenduzzo, Davide
Orlandini, Enzo
Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
topic_facet Física
active matter
non-equilibrium physics
description The effects of an externally imposed linear shear profile in the Vicsek model of self-propelled particles is investigated via computer simulations. We find that the applied field changes in a relevant way both the equilibrium and dynamical properties of the original model. Indeed, short time dynamics analysis shows that the order-disordered phase transition disappears under shear, because the flow acts as a symmetry breaking field. Moreover, the coarsening of particle domains is arrested at a characteristic length-scale inversely proportional to shear rate. A generalization of the original Vicsek model where the velocity of particles depends on the local value of the density is also introduced and shows to affect the domain formation.
format Articulo
Articulo
author Saracco, Gustavo Pablo
Gonnella, Giuseppe
Marenduzzo, Davide
Orlandini, Enzo
author_facet Saracco, Gustavo Pablo
Gonnella, Giuseppe
Marenduzzo, Davide
Orlandini, Enzo
author_sort Saracco, Gustavo Pablo
title Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
title_short Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
title_full Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
title_fullStr Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
title_full_unstemmed Equilibrium and dynamical behavior in the Vicsek model for self-propelled particles under shear
title_sort equilibrium and dynamical behavior in the vicsek model for self-propelled particles under shear
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/114723
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AT gonnellagiuseppe equilibriumanddynamicalbehaviorinthevicsekmodelforselfpropelledparticlesundershear
AT marenduzzodavide equilibriumanddynamicalbehaviorinthevicsekmodelforselfpropelledparticlesundershear
AT orlandinienzo equilibriumanddynamicalbehaviorinthevicsekmodelforselfpropelledparticlesundershear
bdutipo_str Repositorios
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