Physical Review Letters· 2012Q1
Athermal Phase Separation of Self-Propelled Particles with No Alignment
- 1,147citations
- Q1SCImago
- 2012year
Short summary
Self-propelled polar disks without alignment interactions spontaneously phase separate below close packing, driven by local out-of-equilibrium activity.
AI-generated from the title and abstract; the full text is not read.
Key points
- Self-propelled polar disks without alignment interactions undergo phase separation.
- Phase separation occurs below close packing and is athermal.
- The phenomenon is driven by local out-of-equilibrium activity, not alignment.
- The system exhibits large number fluctuations and clustering.
AI-generated from the title and abstract; the full text is not read.
Abstract
We study numerically and analytically a model of self-propelled polar disks on a substrate in two dimensions. The particles interact via isotropic repulsive forces and are subject to rotational noise, but there is no aligning interaction. As a result, the system does not exhibit an ordered state. The isotropic fluid phase separates well below close packing and exhibits the large number fluctuations and clustering found ubiquitously in active systems. Our work shows that this behavior is a generic property of systems that are driven out of equilibrium locally, as for instance by self-propulsion.
The authors' abstract, as published at the source. Physical Review Letters, 2012 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Condensed Matter Physics
Condensed Matter PhysicsPhysics and Astronomy