Density-independent transient caging in the high-density phase of motility-induced phase separation
Abstract
We investigate the nonequilibrium dynamics of active matter using a two-dimensional active Brownian particles model. In these systems, self-propelled particles undergo motility-induced phase separation (MIPS), spontaneously segregating into dense and dilute phases. We find that in the high-density phase, local particle mobility exhibits transient caging, with diffusivity remaining unchanged despite variations in the global system density. As global density increases further, the system undergoes a transition to a solidlike state through an intermediate regime with pronounced dynamical arrest. Our findings identify a distinct high-density regime characterized by transient caging and dynamical slowing down in a monodisperse active system, shedding light on the connection between MIPS and nonequilibrium arrest.
Fields of Study & Subjects
Liquid Crystal Research Advancements
Material Dynamics and Properties
Pickering emulsions and particle stabilization
Publication details
- Journal / source
- Physical review. E
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 2
- Pages
- 025423–025423
- Publication date
- 26 January 2026
- Language
- EN