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Generalized thermodynamics of motility-induced phase separation : Phase equilibria, Laplace pressure, and change of ensembles

Solon, Alexandre P.; Stenhammar, Joakim LU ; Cates, Michael E.; Kafri, Yariv and Tailleur, Julien (2018) In New Journal of Physics 20(7).
Abstract

Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that controls finite-size corrections to coexisting densities, and generalized forces, that can be used to construct new thermodynamic ensembles. Our framework is based on a non-equilibrium generalization of the Cahn-Hilliard equation and we discuss its application to active particles interacting either via quorum-sensing interactions or directly through pairwise forces.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
active matter, motility-induced phase separation, non-equilibrium statistical mechanics
in
New Journal of Physics
volume
20
issue
7
publisher
IOP Publishing Ltd.
external identifiers
  • scopus:85051678602
ISSN
1367-2630
DOI
10.1088/1367-2630/aaccdd
language
English
LU publication?
yes
id
451888c0-9eeb-4f99-88b6-cd16a60fe867
date added to LUP
2018-09-11 14:29:07
date last changed
2019-03-19 03:59:13
@article{451888c0-9eeb-4f99-88b6-cd16a60fe867,
  abstract     = {<p>Motility-induced phase separation leads to cohesive active matter in the absence of cohesive forces. We present, extend and illustrate a recent generalized thermodynamic formalism which accounts for its binodal curve. Using this formalism, we identify both a generalized surface tension, that controls finite-size corrections to coexisting densities, and generalized forces, that can be used to construct new thermodynamic ensembles. Our framework is based on a non-equilibrium generalization of the Cahn-Hilliard equation and we discuss its application to active particles interacting either via quorum-sensing interactions or directly through pairwise forces.</p>},
  articleno    = {075001},
  author       = {Solon, Alexandre P. and Stenhammar, Joakim and Cates, Michael E. and Kafri, Yariv and Tailleur, Julien},
  issn         = {1367-2630},
  keyword      = {active matter,motility-induced phase separation,non-equilibrium statistical mechanics},
  language     = {eng},
  month        = {07},
  number       = {7},
  publisher    = {IOP Publishing Ltd.},
  series       = {New Journal of Physics},
  title        = {Generalized thermodynamics of motility-induced phase separation : Phase equilibria, Laplace pressure, and change of ensembles},
  url          = {http://dx.doi.org/10.1088/1367-2630/aaccdd},
  volume       = {20},
  year         = {2018},
}