In particle systems subject to a nonuniform drive, particle migration is observed from the driven to the non-driven region and vice-versa, depending on details of the hopping dynamics, leading to apparent violations of Fick's law and of steady-state thermodynamics. We propose and discuss a very basic model in the framework of independent random walkers on a pair of rings, one of which features biased hopping rates, in which this phenomenon is observed and fully explained.
Uphill currents in coupled, driven zero-range processes / Cirillo, E. N. M.; Colangeli, M.; Dickman, R.. - In: JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT. - ISSN 1742-5468. - 7(2019). [10.1088/1742-5468/ab2902]
Uphill currents in coupled, driven zero-range processes
Cirillo E. N. M.;
2019
Abstract
In particle systems subject to a nonuniform drive, particle migration is observed from the driven to the non-driven region and vice-versa, depending on details of the hopping dynamics, leading to apparent violations of Fick's law and of steady-state thermodynamics. We propose and discuss a very basic model in the framework of independent random walkers on a pair of rings, one of which features biased hopping rates, in which this phenomenon is observed and fully explained.| File | Dimensione | Formato | |
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