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dc.contributor.author
Cavagnaro, Romina Andrea
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dc.contributor.author
Conti, Daniele
dc.contributor.author
Giardina, Irene
dc.contributor.author
Grigera, Tomas Sebastian
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dc.date.available
2019-11-20T16:32:58Z
dc.date.issued
2018-11
dc.identifier.citation
Cavagnaro, Romina Andrea; Conti, Daniele; Giardina, Irene; Grigera, Tomas Sebastian; Propagating speed waves in flocks: A mathematical model; American Physical Society; Physical Review E; 98; 5; 11-2018
dc.identifier.issn
2470-0053
dc.identifier.uri
http://hdl.handle.net/11336/89286
dc.description.abstract
An efficient collective response to external perturbations is one of the most striking abilities of a biological system. One of the crucial aspect of this phenomenon is given by the information transfer, and resulting propagation of signals, within the group. In this respect the existence of density waves that propagate linearly on a flock of birds is well known. However, most aspects of this phenomenon are still not fully captured by theoretical models. In this work we present a model for the propagation of speed fluctuations inside a flock, which is able to reproduce the observed density waves. We study the full solution of the model in d=1, and we find a line in the parameter space along which the system relaxes as fast as possible without oscillating, resembling a generalized critical damping condition. By analyzing the parameters plane we show that this "critical damping" line indeed represents an attractor for a steepest descent dynamics of the return time of the system. Finally we propose a method to test the validity of the model through future experiments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Active Matter
dc.subject
Flocking
dc.subject.classification
Otras Ciencias Físicas
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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
Propagating speed waves in flocks: A mathematical model
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-17T20:14:15Z
dc.journal.volume
98
dc.journal.number
5
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Cavagnaro, Romina Andrea. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Conti, Daniele. Università degli studi di Roma "La Sapienza; Italia
dc.description.fil
Fil: Giardina, Irene. Università degli studi di Roma "La Sapienza; ; Italia
dc.description.fil
Fil: Grigera, Tomas Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina
dc.journal.title
Physical Review E
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevE.98.052404
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.98.052404
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