Phase separation and emergence of collective motion in a one-dimensional system of active particles

Autores
Barberis, Lucas Miguel; Peruani San Román, Fernando Miguel
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study numerically a one-dimensional system of self-propelled particles, where the state of the particles is given by their moving direction (left or right), which is encoded by a spin-like variable, and their position. Particles interact by short-ranged, spring-like attractive forces and do not possess spin-spin interactions (i.e., velocity alignment). Newton's third law is broken in this model by assuming an asymmetric interaction range that is larger in the direction of the moving direction of the particle. We show that in this nonequilibrium system, due to the absence of the action-reaction symmetry, there exists an intimate link between phase separation and the formation of highly coherent, spatially localized, moving flocks (i.e., collective motion). More specifically, we prove the existence of two fundamentally different types of active phase separation, which we refer to as neutral phase separation (NPS) and polar phase separation. Furthermore, we indicate that NPS is subdivided in two classes with distinct critical exponents. These results are of key importance to understand that in active matter, there exist several phase-separation classes and that the emergence of polar, self-organized patterns (i.e., flocks) does not require the presence of a velocity alignment.
Fil: Barberis, Lucas Miguel. Université Nice Sophia Antipolis; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Peruani San Román, Fernando Miguel. Université Nice Sophia Antipolis; Francia
Materia
SELF-PROPELLED PARTICLES
ONE DIMENSIONAL MODELS
BREAKING ACTION-REACTION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/125365

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spelling Phase separation and emergence of collective motion in a one-dimensional system of active particlesBarberis, Lucas MiguelPeruani San Román, Fernando MiguelSELF-PROPELLED PARTICLESONE DIMENSIONAL MODELSBREAKING ACTION-REACTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study numerically a one-dimensional system of self-propelled particles, where the state of the particles is given by their moving direction (left or right), which is encoded by a spin-like variable, and their position. Particles interact by short-ranged, spring-like attractive forces and do not possess spin-spin interactions (i.e., velocity alignment). Newton's third law is broken in this model by assuming an asymmetric interaction range that is larger in the direction of the moving direction of the particle. We show that in this nonequilibrium system, due to the absence of the action-reaction symmetry, there exists an intimate link between phase separation and the formation of highly coherent, spatially localized, moving flocks (i.e., collective motion). More specifically, we prove the existence of two fundamentally different types of active phase separation, which we refer to as neutral phase separation (NPS) and polar phase separation. Furthermore, we indicate that NPS is subdivided in two classes with distinct critical exponents. These results are of key importance to understand that in active matter, there exist several phase-separation classes and that the emergence of polar, self-organized patterns (i.e., flocks) does not require the presence of a velocity alignment.Fil: Barberis, Lucas Miguel. Université Nice Sophia Antipolis; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Peruani San Román, Fernando Miguel. Université Nice Sophia Antipolis; FranciaAmerican Institute of Physics2019-04-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125365Barberis, Lucas Miguel; Peruani San Román, Fernando Miguel; Phase separation and emergence of collective motion in a one-dimensional system of active particles; American Institute of Physics; Journal of Chemical Physics; 150; 14; 14-4-2019; 1449050021-9606CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.5085840info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5085840info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:23Zoai:ri.conicet.gov.ar:11336/125365instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:26:24.082CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Phase separation and emergence of collective motion in a one-dimensional system of active particles
title Phase separation and emergence of collective motion in a one-dimensional system of active particles
spellingShingle Phase separation and emergence of collective motion in a one-dimensional system of active particles
Barberis, Lucas Miguel
SELF-PROPELLED PARTICLES
ONE DIMENSIONAL MODELS
BREAKING ACTION-REACTION
title_short Phase separation and emergence of collective motion in a one-dimensional system of active particles
title_full Phase separation and emergence of collective motion in a one-dimensional system of active particles
title_fullStr Phase separation and emergence of collective motion in a one-dimensional system of active particles
title_full_unstemmed Phase separation and emergence of collective motion in a one-dimensional system of active particles
title_sort Phase separation and emergence of collective motion in a one-dimensional system of active particles
dc.creator.none.fl_str_mv Barberis, Lucas Miguel
Peruani San Román, Fernando Miguel
author Barberis, Lucas Miguel
author_facet Barberis, Lucas Miguel
Peruani San Román, Fernando Miguel
author_role author
author2 Peruani San Román, Fernando Miguel
author2_role author
dc.subject.none.fl_str_mv SELF-PROPELLED PARTICLES
ONE DIMENSIONAL MODELS
BREAKING ACTION-REACTION
topic SELF-PROPELLED PARTICLES
ONE DIMENSIONAL MODELS
BREAKING ACTION-REACTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study numerically a one-dimensional system of self-propelled particles, where the state of the particles is given by their moving direction (left or right), which is encoded by a spin-like variable, and their position. Particles interact by short-ranged, spring-like attractive forces and do not possess spin-spin interactions (i.e., velocity alignment). Newton's third law is broken in this model by assuming an asymmetric interaction range that is larger in the direction of the moving direction of the particle. We show that in this nonequilibrium system, due to the absence of the action-reaction symmetry, there exists an intimate link between phase separation and the formation of highly coherent, spatially localized, moving flocks (i.e., collective motion). More specifically, we prove the existence of two fundamentally different types of active phase separation, which we refer to as neutral phase separation (NPS) and polar phase separation. Furthermore, we indicate that NPS is subdivided in two classes with distinct critical exponents. These results are of key importance to understand that in active matter, there exist several phase-separation classes and that the emergence of polar, self-organized patterns (i.e., flocks) does not require the presence of a velocity alignment.
Fil: Barberis, Lucas Miguel. Université Nice Sophia Antipolis; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Peruani San Román, Fernando Miguel. Université Nice Sophia Antipolis; Francia
description We study numerically a one-dimensional system of self-propelled particles, where the state of the particles is given by their moving direction (left or right), which is encoded by a spin-like variable, and their position. Particles interact by short-ranged, spring-like attractive forces and do not possess spin-spin interactions (i.e., velocity alignment). Newton's third law is broken in this model by assuming an asymmetric interaction range that is larger in the direction of the moving direction of the particle. We show that in this nonequilibrium system, due to the absence of the action-reaction symmetry, there exists an intimate link between phase separation and the formation of highly coherent, spatially localized, moving flocks (i.e., collective motion). More specifically, we prove the existence of two fundamentally different types of active phase separation, which we refer to as neutral phase separation (NPS) and polar phase separation. Furthermore, we indicate that NPS is subdivided in two classes with distinct critical exponents. These results are of key importance to understand that in active matter, there exist several phase-separation classes and that the emergence of polar, self-organized patterns (i.e., flocks) does not require the presence of a velocity alignment.
publishDate 2019
dc.date.none.fl_str_mv 2019-04-14
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/125365
Barberis, Lucas Miguel; Peruani San Román, Fernando Miguel; Phase separation and emergence of collective motion in a one-dimensional system of active particles; American Institute of Physics; Journal of Chemical Physics; 150; 14; 14-4-2019; 144905
0021-9606
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125365
identifier_str_mv Barberis, Lucas Miguel; Peruani San Román, Fernando Miguel; Phase separation and emergence of collective motion in a one-dimensional system of active particles; American Institute of Physics; Journal of Chemical Physics; 150; 14; 14-4-2019; 144905
0021-9606
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.5085840
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5085840
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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