Reference : Dissipation controls transport and phase transitions in active fluids: mobility, diff...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
Dissipation controls transport and phase transitions in active fluids: mobility, diffusion and biased ensembles
Fodor, Etienne mailto [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]
Yes (verified by ORBilu)
[en] active matter; phase transitions; large deviations DYNAMICS; ORDER; MODEL; DENSITY; SYSTEM; MATTER Physics Physics ; Multidisciplinary 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
[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.

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