Mostrar el registro sencillo del ítem

dc.contributor.author
Cavagna, Andrea  
dc.contributor.author
Conti, Daniele  
dc.contributor.author
Creato, Chiara  
dc.contributor.author
Del Castello, Lorenzo  
dc.contributor.author
Giardina, Irene  
dc.contributor.author
Grigera, Tomas Sebastian  
dc.contributor.author
Melillo, Stefania  
dc.contributor.author
Parisi, Leonardo  
dc.contributor.author
Viale, Massimiliano  
dc.date.available
2018-06-12T14:15:43Z  
dc.date.issued
2017-06  
dc.identifier.citation
Cavagna, Andrea; Conti, Daniele; Creato, Chiara; Del Castello, Lorenzo; Giardina, Irene; et al.; Dynamic scaling in natural swarms; Nature Publishing Group; Nature Physics; 13; 9; 6-2017; 914-918  
dc.identifier.issn
1745-2473  
dc.identifier.uri
http://hdl.handle.net/11336/48246  
dc.description.abstract
Collective behaviour in biological systems presents theoretical challenges beyond the borders of classical statistical physics. The lack of concepts such as scaling and renormalization is particularly problematic, as it forces us to negotiate details whose relevance is often hard to assess. In an attempt to improve this situation, we present here experimental evidence of the emergence of dynamic scaling laws in natural swarms of midges. We find that spatio-temporal correlation functions in different swarms can be rescaled by using a single characteristic time, which grows with the correlation length with a dynamical critical exponent z ≈ 1, a value not found in any other standard statistical model. To check whether out-of-equilibrium effects may be responsible for this anomalous exponent, we run simulations of the simplest model of self-propelled particles and find z ≈ 2, suggesting that natural swarms belong to a novel dynamic universality class. This conclusion is strengthened by experimental evidence of the presence of non-dissipative modes in the relaxation, indicating that previously overlooked inertial effects are needed to describe swarm dynamics. The absence of a purely dissipative regime suggests that natural swarms undergo a near-critical censorship of hydrodynamics.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Nature Publishing Group  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Swarming  
dc.subject
Collective Behaviour  
dc.subject.classification
Astronomía  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Dynamic scaling in natural swarms  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-06-08T14:27:28Z  
dc.journal.volume
13  
dc.journal.number
9  
dc.journal.pagination
914-918  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Cavagna, Andrea. Consiglio Nazionale delle Ricerche; Italia  
dc.description.fil
Fil: Conti, Daniele. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Creato, Chiara. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Del Castello, Lorenzo. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Giardina, Irene. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia. INFN; 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.description.fil
Fil: Melillo, Stefania. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Parisi, Leonardo. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Viale, Massimiliano. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.journal.title
Nature Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1038/nphys4153  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/nphys4153