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Article Dans Une Revue Physical Review Letters Année : 2024

From Particle Currents to Tracer Diffusion: Universal Correlation Profiles in Single-File Dynamics

Résumé

Single-file transport refers to the motion of particles in a narrow channel, such that they cannot bypass each other. This constraint leads to strong correlations between the particles, described by correlation profiles, which have recently been shown to play a central role in single-file systems. Up to now, these correlations have only been determined for diffusive systems in the hydrodynamic limit. Here, we consider a model of reflecting point particles on the infinite line, with a general individual stochastic dynamics. We show that the correlation profiles take a simple universal form, at arbitrary time. We illustrate our approach by the study the integrated current of particles through the origin, and apply our results to representative models such as Brownian particles, run-and-tumble particles and Lévy flights. We further emphasise the generality of our results by showing that they also apply beyond the 1d case, and to other observables.
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Dates et versions

hal-04445752 , version 1 (08-02-2024)

Identifiants

Citer

Aurélien Grabsch, Théotim Berlioz, Pierre Rizkallah, Pierre Illien, Olivier Bénichou. From Particle Currents to Tracer Diffusion: Universal Correlation Profiles in Single-File Dynamics. Physical Review Letters, 2024, 132 (3), pp.037102. ⟨10.1103/PhysRevLett.132.037102⟩. ⟨hal-04445752⟩
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