Nonequilibrium strongly hyperuniform fluids of circle active particles with large local density fluctuations

2018/02/28 by Qun‐Li Lei, Qun-li Lei, Massimo Pica Ciamarra +1 · 174 citations
Materials Science · Physics and Astronomy · #Active matter #Advanced Thermodynamics and Statistical Mechanics #Classical mechanics #Condensed matter physics #Diffusion #Fick's laws of diffusion #Length scale #Material Dynamics and Properties #Mechanics #Micro and Nano Robotics #Non-equilibrium thermodynamics #Physics #Quantum mechanics #RADIUS #Statistical physics #Wavelength #cond-mat.soft

paper · pdf · doi:10.1126/sciadv.aau7423

published in Science Advances 5(1), eaau7423 (American Association for the Advancement of Science)

openalex publication_date 2019/01/04 · arxiv created 2019/01/26 · arxiv updated 2019/01/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

with the same handedness. This new hyperuniform fluid features a special length scale, i.e., the diameter of the circular trajectory of particles, below which large density fluctuations are observed. By developing a dynamic mean-field theory, we show that the large local density fluctuations can be explained as a motility-induced microphase separation, while the Fickian diffusion at large length scales and local center-of-mass-conserved noises are responsible for the global hyperuniformity.

Citations

• Athermal Phase Separation of Self-Propelled Particles with No Alignment
• Implementation of Disability Compliance for Patron Services in Post-Secondary Education Libraries
• Non-equilibrium critical phenomena and phase transitions into absorbing states
• Active nematics on a substrate: Giant number fluctuations and long-time tails
• Local Density Fluctuations, Hyperuniformity, and Order Metrics

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