A Continuum Theory of Phase Separation Kinetics for Active Brownian Particles
(2013) In Physical Review Letters 111.- Abstract
- Active Brownian particles (ABPs), when subject to purely repulsive interactions, are known to undergo activity-induced phase separation broadly resembling an equilibrium (attraction-induced) gas-liquid coexistence. Here we present an accurate continuum theory for the dynamics of phase-separating ABPs, derived by direct coarse-graining, capturing leading-order density gradient terms alongside an effective bulk free energy. Such gradient terms do not obey detailed balance; yet we find coarsening dynamics closely resembling that of equilibrium phase separation. Our continuum theory is numerically compared to large-scale direct simulations of ABPs and accurately accounts for domain growth kinetics, domain topologies and coexistence densities.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4075657
- author
- Stenhammar, Joakim LU ; Tiribocchi, Adriano ; Allen, Rosalind J. ; Marenduzzo, Davide and Cates, Michael E.
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Active Matter, Phase Separation Kinetics
- in
- Physical Review Letters
- volume
- 111
- article number
- 145702
- publisher
- American Physical Society
- external identifiers
-
- wos:000325369600014
- scopus:84885114675
- pmid:24138255
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.111.145702
- language
- English
- LU publication?
- yes
- id
- 6360fd01-9ef3-4476-9c12-44ace5780e6f (old id 4075657)
- alternative location
- http://prl.aps.org/abstract/PRL/v111/i14/e145702
- date added to LUP
- 2016-04-01 10:51:36
- date last changed
- 2022-04-20 06:47:39
@article{6360fd01-9ef3-4476-9c12-44ace5780e6f, abstract = {{Active Brownian particles (ABPs), when subject to purely repulsive interactions, are known to undergo activity-induced phase separation broadly resembling an equilibrium (attraction-induced) gas-liquid coexistence. Here we present an accurate continuum theory for the dynamics of phase-separating ABPs, derived by direct coarse-graining, capturing leading-order density gradient terms alongside an effective bulk free energy. Such gradient terms do not obey detailed balance; yet we find coarsening dynamics closely resembling that of equilibrium phase separation. Our continuum theory is numerically compared to large-scale direct simulations of ABPs and accurately accounts for domain growth kinetics, domain topologies and coexistence densities.}}, author = {{Stenhammar, Joakim and Tiribocchi, Adriano and Allen, Rosalind J. and Marenduzzo, Davide and Cates, Michael E.}}, issn = {{1079-7114}}, keywords = {{Active Matter; Phase Separation Kinetics}}, language = {{eng}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{A Continuum Theory of Phase Separation Kinetics for Active Brownian Particles}}, url = {{https://lup.lub.lu.se/search/files/2192164/4075658.pdf}}, doi = {{10.1103/PhysRevLett.111.145702}}, volume = {{111}}, year = {{2013}}, }