title: Nonequilibrium steady states in asymmetric exclusion processes on a ring with bottlenecks.
abstract: Generic inhomogeneous steady states in an asymmetric exclusion process on a ring with a pair of point bottlenecks are studied. We show that, due to an underlying universal feature, measurements of coarse-grained steady-state densities in this model resolve the bottleneck structures only partially. Unexpectedly, it displays localization-delocalization transitions and confinement of delocalized domain walls, controlled by the interplay between particle number conservation and bottleneck competition for moderate particle densities.
authors.affiliation: Condensed Matter Physics Division, Saha Institute of Nuclear Physics, Calcutta 700064, India.
authors.forename: Niladri
authors.initials: N
authors.lastname: Sarkar
authors.affiliation: Condensed Matter Physics Division, Saha Institute of Nuclear Physics, Calcutta 700064, India.
authors.forename: Abhik
authors.initials: A
authors.lastname: Basu
mesh_terms: D003198:Computer Simulation; D008962:Models, Theoretical; D009010:Monte Carlo Method