Distribution of current in non-equilibrium diffusive systems and phase transitions

Details Distribution of current in non-equilibrium diffusive systems and phase transitions Distribution of current in non-equilibrium diffusive systems and phase transitions

2005-06-21

arxiv.org/abs/cond-mat/0506540v1

Physics

Condensed Matter

Statistical Mechanics

8 pages, 1 figure

Scientific paper

10.1103/PhysRevE.72.066110

We consider diffusive lattice gases on a ring and analyze the stability of their density profiles conditionally to a current deviation. Depending on the current, one observes a phase transition between a regime where the density remains constant and another regime where the density becomes time dependent. Numerical data confirm this phase transition. This time dependent profile persists in the large drift limit and allows one to understand on physical grounds the results obtained earlier for the totally asymmetric exclusion process on a ring.

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