Article (Scientific journals)
Dissipation controls transport and phase transitions in active fluids: mobility, diffusion and biased ensembles
Fodor, Etienne; Nemoto, Takahiro; Vaikuntanathan, Suriyanarayanan
2020In New Journal of Physics, 22 (1)
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Keywords :
active matter; phase transitions; large deviations DYNAMICS; ORDER; MODEL; DENSITY; SYSTEM; MATTER Physics Physics; Multidisciplinary e.fodor@damtp.cam.ac.uk Nemoto; Takahiro/0000-0003-2981-4035 Fodor; Etienne/0000-0003-1372-2195 Region Ile de FranceRegion Ile-de-France; project Equip@Meso of the program Investissements d'AvenirFrench National Research Agency (ANR) [ANR-10-EQPX-29-01]; Sloan FoundationAlfred P. Sloan Foundation University of ChicagoUniversity of Chicago; National Science FoundationNational Science Foundation (NSF) [DMR-1848306]; University of CambridgeUniversity of Cambridge; St Catherine's College The authors acknowledge insightful discussions with Michael E Cates Vincent Demery; Robert L Jack; and Julien Tailleur. This work was granted access to the HPC resources of CINES/TGCC under the allocation 2018-A0042A10457 made by GENCI and of MesoPSL financed by the Region Ile de France and the project Equip@Meso (reference ANR-10-EQPX-29-01) of the program Investissements d'Avenir supervised by the Agence Nationale pour la Recherche. SV acknowledges support from the Sloan Foundation startup funds from the University of Chicago and support from the National Science Foundation under award number DMR-1848306. EF benefits from an Oppenheimer Research Fellowship from the University of Cambridge; and a Junior Research Fellowship from St Catherine's College. 114 9 0 3 New J. Phys. KG8YO WOS:000510237600001
Abstract :
[en] Active fluids operate by constantly dissipating energy at the particle level to perform a directed motion, yielding dynamics and phases without any equilibrium equivalent. The emerging behaviors have been studied extensively, yet deciphering how local energy fluxes control the collective phenomena is still largely an open challenge. We provide generic relations between the activity-induced dissipation and the transport properties of an internal tracer. By exploiting a mapping between active fluctuations and disordered driving, our results reveal how the local dissipation, at the basis of self-propulsion, constrains internal transport by reducing the mobility and the diffusion of particles. Then, we employ techniques of large deviations to investigate how interactions are affected when varying dissipation. This leads us to shed light on a microscopic mechanism to promote clustering at low dissipation, and we also show the existence of collective motion at high dissipation. Overall, these results illustrate how tuning dissipation provides an alternative route to phase transitions in active fluids.
Disciplines :
Physics
Author, co-author :
Fodor, Etienne ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Nemoto, Takahiro;  Philippe Meyer Institute for Theoretical Physics, Physics Department, École Normale Supérieure&PSL Research University, 24 rue Lhomond, F-75231 Paris Cedex 05, France
Vaikuntanathan, Suriyanarayanan;  James Franck Institute, University of Chicago, Chicago, IL 60637, United States of America ; Department of Chemistry, University of Chicago, Chicago, IL 60637, United States of America
External co-authors :
yes
Language :
English
Title :
Dissipation controls transport and phase transitions in active fluids: mobility, diffusion and biased ensembles
Publication date :
2020
Journal title :
New Journal of Physics
ISSN :
1367-2630
Publisher :
IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND, Unknown/unspecified
Volume :
22
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Commentary :
Article
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