DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Phase separation and large deviations of lattice active matter

Journal Article · · Journal of Chemical Physics
DOI: https://doi.org/10.1063/1.5023403 · OSTI ID:1462977
 [1]; ORCiD logo [2];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States)

Off-lattice active Brownian particles form clusters and undergo phase separation even in the absence of attractions or velocity-alignment mechanisms. Arguments that explain this phenomenon appeal only to the ability of particles to move persistently in a direction that fluctuates, but existing lattice models of hard particles that account for this behavior do not exhibit phase separation. Here we present a lattice model of active matter that exhibits motility-induced phase separation in the absence of velocity alignment. Using direct and rare-event sampling of dynamical trajectories, we show that clustering and phase separation are accompanied by pronounced fluctuations of static and dynamic order parameters. In conclusion, this model provides a complement to off-lattice models for the study of motility-induced phase separation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1462977
Alternate ID(s):
OSTI ID: 1434178
Journal Information:
Journal of Chemical Physics, Vol. 148, Issue 15; Related Information: © 2018 Author(s).; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

References (58)

Rectification of Swimming Bacteria and Self-Driven Particle Systems by Arrays of Asymmetric Barriers journal July 2008
Effective interactions and large deviations in stochastic processes journal June 2015
Hot particles attract in a cold bath journal April 2017
Dynamic Order-Disorder in Atomistic Models of Structural Glass Formers journal March 2009
An introduction to the hydrodynamics of swimming microorganisms journal September 2014
Statistical mechanics and hydrodynamics of bacterial suspensions journal August 2009
The Mechanics and Statistics of Active Matter journal August 2010
Sampling rare fluctuations of discrete-time Markov chains journal March 2018
Rare behavior of growth processes via umbrella sampling of trajectories journal March 2018
Twenty Five Years After KLS: A Celebration of Non-equilibrium Statistical Mechanics journal December 2009
Brownian motion of a self-propelled particle journal April 2011
Canonical structure of dynamical fluctuations in mesoscopic nonequilibrium steady states journal April 2008
The nature of the laning transition in two dimensions journal October 2012
Simulating Rare Events in Dynamical Processes journal September 2011
Motility-Induced Phase Separation journal March 2015
Motility-Induced Phase Separation of Active Particles in the Presence of Velocity Alignment journal May 2014
Active Brownian particles: From individual to collective stochastic dynamics journal March 2012
Geometrically biased random walks in bacteria-driven micro-shuttles journal November 2010
Long-Lived Giant Number Fluctuations in a Swarming Granular Nematic journal July 2007
Tuned, driven, and active soft matter journal February 2015
Living Crystals of Light-Activated Colloidal Surfers journal January 2013
Negative Interfacial Tension in Phase-Separated Active Brownian Particles journal August 2015
Phase coexistence far from equilibrium journal April 2016
Cluster dynamics and cluster size distributions in systems of self-propelled particles journal December 2010
Bacterial ratchet motors journal May 2010
Self-Starting Micromotors in a Bacterial Bath journal January 2009
Wetting Transitions Displayed by Persistent Active Particles journal August 2017
Thermodynamic Formalism for Systems with Markov Dynamics journal January 2007
The large deviation approach to statistical mechanics journal July 2009
First-order dynamical phase transition in models of glasses: an approach based on ensembles of histories journal January 2009
A general method for numerically simulating the stochastic time evolution of coupled chemical reactions journal December 1976
Thermodynamic Formalism book January 2012
Structure and Dynamics of a Phase-Separating Active Colloidal Fluid journal January 2013
Introduction: Theory and “Technical” Aspects of Monte Carlo Simulations book January 1979
Self-motile colloidal particles: from directed propulsion to random walk text January 2007
Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers text January 2007
The large deviation approach to statistical mechanics text January 2008
First-order dynamical phase transition in models of glasses: an approach based on ensembles of histories text January 2008
The Mechanics and Statistics of Active Matter text January 2010
Brownian motion of a self-propelled particle text January 2010
Lattice Models of Nonequilibrium Bacterial Dynamics text January 2010
Revisiting the flocking transition using active spins text January 2013
Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles text January 2013
A continuum theory of phase separation kinetics for active Brownian particles text January 2013
Computation of Large Deviation Statistics via Iterative Measurement-and-Feedback Procedure text January 2013
Effective Cahn-Hilliard equation for the phase separation of active Brownian particles text January 2013
Cluster dynamics and cluster size distributions in systems of self-propelled particles text January 2014
Activity-induced phase separation and self-assembly in mixtures of active and passive particles text January 2014
Effective interactions and large deviations in stochastic processes text January 2015
Population dynamics method with a multi-canonical feedback control text January 2016
Hot Particles Attract in a Cold Bath text January 2016
Wetting Transitions Displayed by Persistent Active Particles text January 2017
Rare behavior of growth processes via umbrella sampling of trajectories text January 2017
Sampling rare fluctuations of discrete-time Markov chains text January 2017
Thermodynamic formalism for systems with Markov dynamics text January 2006
Long-lived Giant Number Fluctuations in a Swarming Granular Nematic text January 2006
A numerical approach to large deviations in continuous-time text January 2006
Activity-induced collapse and reexpansion of rigid polymers journal December 2014

Cited By (23)

Interface height fluctuations and surface tension of driven liquids with time-dependent dynamics journal March 2019
Motion of active tracer in a lattice gas with cross-shaped particles journal April 2019
Generalized thermodynamics of motility-induced phase separation: phase equilibria, Laplace pressure, and change of ensembles journal July 2018
Dissipation controls transport and phase transitions in active fluids: mobility, diffusion and biased ensembles journal January 2020
Multi-point nonequilibrium umbrella sampling and associated fluctuation relations journal June 2018
Transport in exclusion processes with one-step memory: density dependence and optimal acceleration journal August 2019
Hidden entropy production and work fluctuations in an ideal active gas journal August 2018
Current fluctuations of interacting active Brownian particles journal December 2018
Optimizing active work: Dynamical phase transitions, collective motion, and jamming journal February 2019
Exact Hydrodynamic Description of Active Lattice Gases journal June 2018
Capillary Action in Scalar Active Matter journal January 2020
Dissipation controls transport and phase transitions in active fluids: mobility, diffusion and biased ensembles text January 2020
Exact Hydrodynamic Description of Active Lattice Gases text January 2018
Interface height fluctuations and surface tension of driven liquids with time-dependent dynamics text January 2018
Hidden entropy production and work fluctuations in an ideal active gas text January 2018
Current fluctuations of interacting active Brownian particles text January 2018
Motion of active tracer in a lattice gas with cross-shaped particles text January 2018
Capillary action in scalar active matter text January 2019
Improved bounds on entropy production in living systems journal April 2021
Capillary Action in Scalar Active Matter journal January 2020
Optimizing active work: Dynamical phase transitions, collective motion, and jamming text January 2018
Activity-induced phase transition in a quantum many-body system text January 2020
Critical behavior of active Brownian particles: Connection to field theories text January 2022

Figures / Tables (7)