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dc.contributor.author
Barberis, Lucas Miguel
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dc.contributor.author
Peruani San Román, Fernando Miguel
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dc.date.available
2021-02-10T20:36:34Z
dc.date.issued
2019-04-14
dc.identifier.citation
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
dc.identifier.issn
0021-9606
dc.identifier.uri
http://hdl.handle.net/11336/125365
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Institute of Physics
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
SELF-PROPELLED PARTICLES
dc.subject
ONE DIMENSIONAL MODELS
dc.subject
BREAKING ACTION-REACTION
dc.subject.classification
Física de los Materiales Condensados
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Phase separation and emergence of collective motion in a one-dimensional system of active particles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-19T21:28:12Z
dc.journal.volume
150
dc.journal.number
14
dc.journal.pagination
144905
dc.journal.pais
Estados Unidos
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dc.description.fil
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
dc.description.fil
Fil: Peruani San Román, Fernando Miguel. Université Nice Sophia Antipolis; Francia
dc.journal.title
Journal of Chemical Physics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.5085840
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1063/1.5085840
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