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Article Dans Une Revue Physical Review E Année : 2020

Pair correlation of dilute Active Brownian Particles: from low activity dipolar correction to high activity algebraic depletion wings

Résumé

We study the pair correlation of Active Brownian Particles at low density using numerical simula-tions and analytical calculations. We observe a winged pair correlation: while particles accumulatein front of an active particle as expected, the depletion wake consists of two depletion wings. In thelimit of soft particles, we obtain a closed equation for the pair correlation, allowing us to characterizethe depletion wings. In particular, we unveil two regimes at high activity where the wings adopta self-similar profile and decay algebraically. We also perform experiments of self-propelled Janusparticles and indeed observe the depletion wings.
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hal-03180691 , version 1 (25-03-2021)

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Alexis Poncet, Olivier Bénichou, Vincent Démery, Daiki H Nishiguchi. Pair correlation of dilute Active Brownian Particles: from low activity dipolar correction to high activity algebraic depletion wings. Physical Review E , 2020, 103 (1), ⟨10.1103/PhysRevE.103.012605⟩. ⟨hal-03180691⟩
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