Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 90, Issue 10, Pages -Publisher
SPRINGER
DOI: 10.1140/epjb/e2017-80248-7
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We develop and test cluster approximations, which generalize simple mean-field by taking into account more and more local correlations, for the Totally Asymmetric Simple Exclusion Process with open boundaries. We consider in detail the pair and triplet approximations, discussing the improvements with respect to mean field in various steady state properties. Moreover, we analyze the recently discovered dynamical transition, describing how the spectrum of the relaxation matrix changes at the transition.
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