Dresden 2017 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 60: Posters - Brownian Motion, Noise
DY 60.4: Poster
Donnerstag, 23. März 2017, 17:00–19:30, P1A
Splitting of the Universality Class of Anomalous Transport in Crowded Media — Markus Spanner-Denzer1, Felix Höfling2, Sebastian Kapfer1, Klaus Mecke1, Gerd Schröder-Turk3, and •Thomas Franosch4 — 1FAU Erlangen, Erlangen, Germany — 2FU Berlin, Berlin, Germany — 3Murdoch University, Murdoch, Australia — 4Universität Innsbruck, Innsbruck, Austria
We investigate the emergence of subdiffusive transport by obstruction in continuum models for molecular crowding [1]. While the underlying percolation transition for the accessible space displays universal behavior, the dynamic properties depend in a subtle nonuniversal way on the transport through narrow channels. At the same time, the different universality classes are robust with respect to introducing correlations in the obstacle matrix as we demonstrate for quenched hard-sphere liquids as underlying structures. Our results confirm that the microscopic dynamics can dominate the relaxational behavior even at long times, in striking contrast to glassy dynamics.
[1] M. Spanner, F. Höfling, S.C. Kapfer, K.R. Mecke, G.E. Schröder-Turk, and T. Franosch, Phys. Rev. Lett. 116, 060601 (2016).