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Abstract / Description of output
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.
Original language | English |
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Article number | 145702 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 111 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2 Oct 2013 |
Keywords / Materials (for Non-textual outputs)
- MOLECULAR-DYNAMICS
- FLUCTUATIONS
- BACTERIA
- MATTER
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Dive into the research topics of 'Continuum Theory of Phase Separation Kinetics for Active Brownian Particles'. Together they form a unique fingerprint.Projects
- 1 Finished
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Design Principles for New Soft Materials
Cates, M., Allen, R., Clegg, P., Evans, M., MacPhee, C., Marenduzzo, D. & Poon, W.
7/12/11 → 6/06/17
Project: Research