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Condensed Matter > Statistical Mechanics
Title: Attraction and condensation of driven tracers in a narrow channel
(Submitted on 19 Dec 2020 (v1), last revised 24 Jun 2021 (this version, v2))
Abstract: Emergent bath-mediated attraction and condensation arise when multiple particles are simultaneously driven through an equilibrated bath under geometric constraints. While such scenarios are observed in a variety of non-equilibrium phenomena, with an abundance of experimental and numerical evidence, little quantitative understanding of how these interactions arise is currently available. Here we approach the problem by studying the behavior of two driven "tracer" particles, propagating through a bath in a 1D lattice with excluded-volume interactions. We analytically explore the mechanism responsible for the tracers' emergent interactions and compute the resulting effective attractive potential. This mechanism is then numerically shown to extend to a realistic model of hard driven Brownian discs confined to a narrow 2D channel.
Submission history
From: Asaf Miron [view email][v1] Sat, 19 Dec 2020 16:29:03 GMT (991kb,D)
[v2] Thu, 24 Jun 2021 12:39:01 GMT (1199kb,D)
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