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Home
Research Domains
Physical Sciences
Condensed Matter Physics
Surface Properties Of Condensed Matter
Depinning Transition Of Self-propelled Particles.

Home
Research Domains
Physical Sciences
Condensed Matter Physics
Surface Properties Of Condensed Matter
Depinning Transition Of Self-propelled Particles.

Related Experiment Video

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Depinning transition of self-propelled particles.

Arthur V Straube¹, Felix Höfling¹

¹Freie Universität Berlin, Zuse Institute Berlin, Takustraße 7, 14195 Berlin, Germany and Department of Mathematics and Computer Science, Arnimallee 6, 14195 Berlin, Germany.

Physical Review. E

|February 7, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Self-propelled particles in corrugated landscapes exhibit unique depinning transitions and creep regimes. Their drift velocity shows unusual nonlinear responses dependent on propulsion direction persistence and dimensionality.

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Area of Science:

Physics
Statistical Mechanics
Soft Matter

Background:

Self-propelled particles (SPPs) in external potentials are crucial for understanding active matter.
Depinning transitions in driven systems are fundamental but less explored for SPPs with persistent motion.

Purpose of the Study:

Investigate the depinning transition and transport phenomena of SPPs in corrugated potentials.
Analyze the influence of propulsion direction persistence on particle dynamics and diffusion.

Main Methods:

Exact and semianalytic calculations for active Brownian particles.
Analysis of scaling laws and dimensionality dependence.
Extension to systems with bounded noise near saddle-node bifurcations.

Main Results:

Observed a discontinuous change in the depinning transition.
Identified a creep regime with superexponentially suppressed drift velocity.
Revealed distinct giant diffusion phenomena dependent on particle reorientation dynamics.

Conclusions:

The study elucidates unique nonlinear responses and diffusion behaviors in driven SPPs.
Findings are relevant for understanding arrested active matter and biological systems like cell migration.