Self-propelled Vicsek particles at low speed and low density

We study through numerical simulation the Vicsek model for very low speeds and densities. We consider scalar noise in two and three dimensions and vector noise in three dimensions. We focus on the behavior of the critical noise with density and speed, trying to clarify seemingly contradictory earlie...

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Detalles Bibliográficos
Autores principales: Rubio Puzzo, María Leticia, De Virgiliis, Andrés, Grigera, Tomás Sebastián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Física
Physics
Statistical physics
Critical point (thermodynamics)
Active matter
Exponent
Low density
Low speed
Scalar (physics)
Computer simulation
Power law
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125522
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125522
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Statistical physics
Critical point (thermodynamics)
Active matter
Exponent
Low density
Low speed
Scalar (physics)
Computer simulation
Power law
spellingShingle Física
Physics
Statistical physics
Critical point (thermodynamics)
Active matter
Exponent
Low density
Low speed
Scalar (physics)
Computer simulation
Power law
Rubio Puzzo, María Leticia
De Virgiliis, Andrés
Grigera, Tomás Sebastián
Self-propelled Vicsek particles at low speed and low density
topic_facet Física
Physics
Statistical physics
Critical point (thermodynamics)
Active matter
Exponent
Low density
Low speed
Scalar (physics)
Computer simulation
Power law
description We study through numerical simulation the Vicsek model for very low speeds and densities. We consider scalar noise in two and three dimensions and vector noise in three dimensions. We focus on the behavior of the critical noise with density and speed, trying to clarify seemingly contradictory earlier results. We find that, for scalar noise, the critical noise is a power law in both density and speed, but although we confirm the density exponent in two dimensions, we find a speed exponent different from earlier reports (we consider lower speeds than previous studies). On the other hand, for the vector noise case we find that the dependence of the critical noise cannot be separated as a product of power laws in speed and density. Finally, we study the dependence of the relaxation time with speed. At the critical point we find a power law, with the same exponent in two and three dimensions.
format Articulo
Articulo
author Rubio Puzzo, María Leticia
De Virgiliis, Andrés
Grigera, Tomás Sebastián
author_facet Rubio Puzzo, María Leticia
De Virgiliis, Andrés
Grigera, Tomás Sebastián
author_sort Rubio Puzzo, María Leticia
title Self-propelled Vicsek particles at low speed and low density
title_short Self-propelled Vicsek particles at low speed and low density
title_full Self-propelled Vicsek particles at low speed and low density
title_fullStr Self-propelled Vicsek particles at low speed and low density
title_full_unstemmed Self-propelled Vicsek particles at low speed and low density
title_sort self-propelled vicsek particles at low speed and low density
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/125522
work_keys_str_mv AT rubiopuzzomarialeticia selfpropelledvicsekparticlesatlowspeedandlowdensity
AT devirgiliisandres selfpropelledvicsekparticlesatlowspeedandlowdensity
AT grigeratomassebastian selfpropelledvicsekparticlesatlowspeedandlowdensity
bdutipo_str Repositorios
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