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arXiv · 2511.16234

Nonequilibrium phase transition in single-file transport at high crowding

Annika Vonhusen·Sören Schweers·Artem Ryabov·Philipp Maass
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Abstract

Driven particle transport in crowded and confining environments is fundamental to diverse phenomena across physics, chemistry, and biology. A main objective in studying such systems is to identify novel emergent states and phases of collective dynamics. Here, we report on a nonequilibrium phase transition occurring in periodic structures at high particle densities. This transition separates a weak-current phase of thermally activated transport from a high-current phase of solitary wave propagation. It is reflected also in a change of universality classes characterizing correlations of particle current fluctuations. Our findings demonstrate that sudden changes to high current states can occur when increasing particle densities beyond critical values.

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Annika Vonhusen, Sören Schweers, Artem Ryabov, Philipp Maass. 2025-11-20. Nonequilibrium phase transition in single-file transport at high crowding. https://doi.org/10.1063/5.0307355

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