N-tag probability law of the symmetric exclusion process

Physical Review. E
Alexis PoncetG Oshanin

Abstract

The symmetric exclusion process (SEP), in which particles hop symmetrically on a discrete line with hard-core constraints, is a paradigmatic model of subdiffusion in confined systems. This anomalous behavior is a direct consequence of strong spatial correlations induced by the requirement that the particles cannot overtake each other. Even if this fact has been recognized qualitatively for a long time, up to now there has been no full quantitative determination of these correlations. Here we study the joint probability distribution of an arbitrary number of tagged particles in the SEP. We determine analytically its large-time limit for an arbitrary density of particles, and its full dynamics in the high-density limit. In this limit, we obtain the time-dependent large deviation function of the problem and unveil a universal scaling form shared by the cumulants.

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Citations

Sep 14, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·O BénichouR Voituriez
Jul 22, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Takeshi Ooshida, Michio Otsuki

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