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Journal Articles Journal of Statistical Mechanics: Theory and Experiment Year : 2023

Duality relations in single-file diffusion

Abstract

Single-file transport, which corresponds to the diffusion of particles that cannot overtake each other in narrow channels, is an important topic in out-of-equilibrium statistical physics. Various microscopic models of single-file systems have been considered, such as the simple exclusion process, which has reached the status of a paradigmatic model. Several different models of single-file diffusion have been shown to be related by a duality relation, which holds either microscopically or only in the hydrodynamic limit of large time and large distances. Here, we show that, within the framework of fluctuating hydrodynamics, these relations are not specific to these models and that, in the hydrodynamic limit, every single-file system can be mapped onto a dual single-file system, which we characterise. This general duality relation allows us to obtain new results for different models, by exploiting the solutions that are available for their dual model.
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Dates and versions

hal-03955411 , version 1 (25-01-2023)

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Pierre Rizkallah, Aurélien Grabsch, Pierre Illien, Olivier Bénichou. Duality relations in single-file diffusion. Journal of Statistical Mechanics: Theory and Experiment, 2023, 2023 (1), pp.013202. ⟨10.1088/1742-5468/aca8fb⟩. ⟨hal-03955411⟩
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