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Pair-factorized steady states on arbitrary graphs

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Original languageEnglish
Article number315003
Pages (from-to)-
Number of pages8
JournalJournal of physics a-Mathematical and theoretical
Volume42
Issue number31
DOIs
StatePublished - 7 Aug 2009

Abstract

Stochastic mass transport models are usually described by specifying hopping rates of particles between sites of a given lattice, and the goal is to predict the existence and properties of the steady state. Here we ask the reverse question: given a stationary state that factorizes over links (pairs of sites) of an arbitrary connected graph, what are possible hopping rates that converge to this state? We define a class of dynamical systems which lead to the same steady state and guarantee current conservation but may differ by the induced current strength. For the special case of anisotropic hopping in two dimensions, we discuss some aspects of the phase structure. We also show how this case can be traced back to an effective zero-range process in one dimension which is solvable for a large class of hopping functions.

    Research areas

  • MASS-TRANSPORT MODELS, STATISTICAL PHYSICS, FORCE FLUCTUATIONS, BEAD PACKS, SYSTEMS

ID: 1215609