Emergence of jams in the generalized totally asymmetric simple exclusion process

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
A E DerbyshevV B Priezzhev

Abstract

The generalized totally asymmetric exclusion process (TASEP) [J. Stat. Mech. (2012) P05014] is an integrable generalization of the TASEP equipped with an interaction, which enhances the clustering of particles. The process interpolates between two extremal cases: the TASEP with parallel update and the process with all particles irreversibly merging into a single cluster moving as an isolated particle. We are interested in the large time behavior of this process on a ring in the whole range of the parameter λ controlling the interaction. We study the stationary state correlations, the cluster size distribution, and the large-time fluctuations of integrated particle current. When λ is finite, we find the usual TASEP-like behavior: The correlation length is finite; there are only clusters of finite size in the stationary state and current fluctuations belong to the Kardar-Parisi-Zhang universality class. When λ grows with the system size, so does the correlation length. We find a nontrivial transition regime with clusters of all sizes on the lattice. We identify a crossover parameter and derive the large deviation function for particle current, which interpolates between the case considered by Derrida-Lebowitz and a single-particl...Continue Reading

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Citations

Oct 3, 2019·Physical Review. E·N Zh BunzarovaJ G Brankov
Aug 24, 2021·Physical Review Letters·Alexandre Krajenbrink, Pierre Le Doussal

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