Weakly coupled, antiparallel, totally asymmetric simple exclusion processes.

Weakly coupled, antiparallel, totally asymmetric simple exclusion processes. Research Abstract Details 

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Weakly coupled, antiparallel, totally asymmetric simple exclusion processes. Abstract Text:

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We study a system composed of two parallel totally asymmetric simple exclusion processes with open boundaries, where the particles move in the two lanes in opposite directions and are allowed to jump to the other lane with rates inversely proportional to the length of the system. Stationary density profiles are determined and the phase diagram of the model is constructed in the hydrodynamic limit, by solving the differential equations describing the steady state of the system, analytically for vanishing total current and numerically for nonzero total current. The system possesses phases with a localized shock in the density profile in one of the lanes, similarly to exclusion processes endowed with nonconserving kinetics in the bulk. Besides, the system undergoes a discontinuous phase transition, where coherently moving delocalized shocks emerge in both lanes and the fluctuation of the global density is described by an unbiased random walk. This phenomenon is analogous to the phase coexistence observed at the coexistence line of the totally asymmetric simple exclusion process, however, as a consequence of the interaction between lanes, the density profiles are deformed and in the case of asymmetric lane change, the motion of the shocks is confined to a limited domain.

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Weakly coupled, antiparallel, totally asymmetric simple exclusion processes. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Physical review. E, Statistical, nonlinear, and so

VOLUME: 76

Page Numbers: 021117

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ISSN: 1539-3755

DAY: 21

MONTH: 08

YEAR: 2007

Weakly coupled, antiparallel, totally asymmetric simple exclusion processes. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Weakly coupled, antiparallel, totally asymmetric simple exclusion processes.

AFFILIATION: Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary. juhasz@szfki.hu

Country: United States

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MEDLINETA: Phys Rev E Stat Nonlin Soft Ma

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