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Paper detail

Two-species TASEP model: from a simple description to intermittency and travelling traffic jams

We extend the paradigmatic and versatile TASEP (Totally Asymmetric Simple Exclusion Process) for stochastic 1d transport to allow for two different particle species, each having specific entry and exit rates. We offer a complete mean-field analysis, including a phase diagram, by mapping this model onto an effective one-species TASEP. Stochastic simulations confirm the results, but indicate deviations when the particle species have very different exit rates. We illustrate that this is due to a phenomenon of intermittency, and formulate a refined 'intermittent' mean-field (iMF) theory for this regime. We discuss how non-stationary effects may further enrich the phenomenology.

preprint2021arXivOpen access
Pierre BonninIan StansfieldM. Carmen RomanoNorbert Kern
cond-mat.stat-mechnlin.CG
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Pierre BonninIan StansfieldM. Carmen RomanoNorbert Kern

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