Equilibrium to off-equilibrium crossover in homogeneous active matter

dc.creatorCavagna, Andrea
dc.creatorDi Carlo, Luca
dc.creatorGiardina, Irene
dc.creatorGrigera, Tomas Sebastian
dc.creatorPisegna, Giulia
dc.date2021-03
dc.date.accessioned2023-08-31T00:16:25Z
dc.date.available2023-08-31T00:16:25Z
dc.identifierhttp://hdl.handle.net/11336/181164
dc.identifierCavagna, Andrea; Di Carlo, Luca; Giardina, Irene; Grigera, Tomas Sebastian; Pisegna, Giulia; Equilibrium to off-equilibrium crossover in homogeneous active matter; American Physical Society; Physical Review Research; 3; 1; 3-2021; 13210-13210
dc.identifier2643-1564
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543266
dc.descriptionWe study the crossover between equilibrium and off-equilibrium dynamical universality classes in the Vicsek model near its ordering transition. Starting from the incompressible hydrodynamic theory of Chen et al. [Critical phenomenon of the order-disorder transition in incompressible active fluids, New J. Phys. 17, 042002 (2015)NJOPFM1367-263010.1088/1367-2630/17/4/042002], we show that increasing the activity leads to a renormalization group (RG) crossover between the equilibrium ferromagnetic fixed point, with dynamical critical exponent z=2, and the off-equilibrium active fixed point, with z=1.7 (in d=3). We run simulations of the classic Vicsek model in the near-ordering regime and find that critical slowing down indeed changes with activity, displaying two exponents that are in remarkable agreement with the RG prediction. The equilibrium to off-equilibrium crossover is ruled by a characteristic length scale, beyond which active dynamics takes over. The larger the activity is, the smaller is such a length scale, suggesting the existence of a general trade-off between activity and the system's size in determining the dynamical universality class of active matter.
dc.descriptionFil: Cavagna, Andrea. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia
dc.descriptionFil: Di Carlo, Luca. Università degli studi di Roma "La Sapienza"; Italia. Consiglio Nazionale delle Ricerche; Italia
dc.descriptionFil: Giardina, Irene. Consiglio Nazionale delle Ricerche; Italia. Università degli studi di Roma "La Sapienza"; Italia. Istituto Nazionale di Fisica Nucleare; Italia
dc.descriptionFil: 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. Consiglio Nazionale delle Ricerche; Italia
dc.descriptionFil: Pisegna, Giulia. Università degli studi di Roma "La Sapienza"; Italia. Consiglio Nazionale delle Ricerche; Italia
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAmerican Physical Society
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevResearch.3.013210
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevResearch.3.013210
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectACTIVE MATTER
dc.subjectVICSEK MODEL
dc.subjecthttps://purl.org/becyt/ford/1.3
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleEquilibrium to off-equilibrium crossover in homogeneous active matter
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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