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DY: Fachverband Dynamik und Statistische Physik
DY 56: Poster: Glasses; Granular Matter; Brownian Motion and Anomalous Diffusion
DY 56.3: Poster
Donnerstag, 19. März 2020, 15:00–18:00, P1A
Collective single-file transport in periodic potentials — •Dominik Lips1, Artem Ryabov2,3, and Philipp Maass1 — 1Universität Osnabrück, Germany — 2Charles University, Prague, Czech Republic — 3Universidade de Lisboa, Portugal
Driven lattice gases are often used to model single-file molecular transport and biological traffic. With respect to continuous space dynamics, the discrete lattice can be regarded to represent a periodic energy landscape in a coarse-grained manner. Thermally activated transitions of particles between different potential wells correspond to jumps between lattice sites, while effects on length scales smaller than the lattice constant are neglected. To study single-file transport on a lower level of coarse-graining, the Brownian asymmetric simple exclusion process (BASEP) was recently introduced [1,2]. In this BASEP, hard spheres perform a driven Brownian motion in a periodic potential under a constant drag force. Case studies with a cosine potential show that the collective dynamics depend sensitively on the ratio of the particle size and wave length of the potential. The interplay of three physical mechanisms leads to a rich variety of nonequilibrium phase transitions in open systems [1,2], and counterintuitive short uphill transitions [3]. Here, we report on new results obtained for periodic potentials with multiple minima per period and other short-range interactions.
[1] D. Lips, A. Ryabov, P. Maass, Phys. Rev. Lett. 121, 160601 (2018).
[2] D. Lips, A. Ryabov, P. Maass, Phys. Rev. E 100, 052121 (2019).
[3] A. Ryabov, D. Lips, P. Maass, J. Phys. Chem. C 123, 5714 (2019).