Field-Embedded Particles Driven by Active Flips

Abstract

Systems of independent active particles embedded into a fluctuating environment are relevant to many areas of soft-matter science. We use a minimal model of noninteracting spin-carrying Brownian particles in a Gaussian field and show that activity-driven spin dynamics leads to patterned order. We find that the competition between mediated interactions and active noise alone can yield such diverse behaviors as phase transitions and microphase separation, from lamellar up to hexagonal ordering of clusters of opposite magnetization. These rest on complex multibody interactions. We find regimes of stationary patterns, but also dynamical regimes of relentless birth and growth of lumps of magnetization opposite to the surrounding one. Our approach combines Monte-Carlo simulations with analytical methods based on dynamical density functional approaches.

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Cited by in corpus (12)

• Classical dynamical density functional theory: from fundamentals to applications
• Intermittent Attractive Interactions Lead to Microphase Separation in Non-motile Active Matter
• Binding of thermalized and active membrane curvature-inducing proteins
• Traveling band formation in feedback-driven colloids
• Dynamics and steady states of a tracer particle in a confined critical fluid
• Inducing oscillations of trapped particles in a near-critical Gaussian field
• Spatial Organization of Active Particles with Field Mediated Interactions
• Membrane domain formation induced by binding/unbinding of curvature-inducing molecules onto both membrane surfaces
• Nematic Torques in Scalar Active Matter: when Fluctuations Favor Polar Order and Persistence
• Universal properties of active membranes
• A renormalization group study of the dynamics of active membranes: universality classes and scaling laws
• Nonequilibrium relaxation of a trapped particle in a near-critical Gaussian field