Dresden 2026 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 43: Poster: Statistical Physics
DY 43.20: Poster
Wednesday, March 11, 2026, 15:00–18:00, P5
Nonequilibrium phase transition in single-file transport at high crowding — •Annika Vonhusen1, Sören Schweers1, Artem Ryabov2, and Philipp Maass1 — 1Universität Osnabrück, Institut für Physik, Germany — 2Charles University, Faculty of Mathematics and Physics, Czech Republic
In driven single-file Brownian motion across periodic energy landscapes, fast particle transport can occur for potential barriers orders of magnitude larger than the thermal energy. The fast transport is mediated by solitary cluster waves forming at high crowding of interacting particles [1]. Cluster waves were first predicted theoretically for hard spheres [2] and shortly after confirmed in experiments [3]. Here we show that persistent cluster wave propagation sets in at a critical density and gives rise to a nonequilibrium phase transition that manifests itself in a singular point of the current-density relation [4]. The critical density varies in a complex manner with the particle size and temperature, which can be understood from a simple geometric principle.
[1] A. P. Antonov, A. Vonhusen, A. Ryabov, P. Maass, Nonlinear Dyn.
[1] 113, 31529 (2025).
[2] A. P. Antonov, A. Ryabov, P. Maass, Phys. Rev. Lett. 129, 080601
[1] (2022).
[3] E. Cereceda-López, A. P. Antonov, A. Ryabov, P. Maass, and
[1] P. Tierno, Nat. Commun. 14, 6448 (2023).
[4] A. Vonhusen, S. Schweers, A. Ryabov, P. Maass, arXiv:2511.16234 [1] (2025), to appear in Chaos.
Keywords: Cluster waves; Phase transition; Solitons; Particle currents; Order parameter