Influence of a uniform driving force on tracer diffusion in a one-dimensional hard-core lattice gas |
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Authors: | R. Kutner H. van Beijeren |
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Affiliation: | (1) Institut für Festkörperforschung, der Kernforschungsanlage Jülich, D-5170 Jülich, West Germany;(2) Institute of Experimental Physics, University of Warsaw, Hoa 69, 00-681 Warszawa, Poland;(3) Institut für Theoretische Physik A, Rheinisch-Westfälische Technische Hochschule Aachen, D-5100 Aachen, West Germany |
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Abstract: | The influence of a uniform driving force on tracer diffusion is investigated for a one-dimensional lattice gas where particles jump stochastically to unoccupied neighboring sites. A new, simple calculation is presented for the diffusion coefficient of a tracer particle with respect to its average drift, obtained recently by rigorous methods by De Masi and Ferrari. A theoretical expression describing the tracer particle mean square displacement approximately for all times is derived and found to be in excellent agreement with the results of Monte Carlo simulations. |
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Keywords: | Tracer diffusion lattice gas models excess noise |
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