Cumulants of the current in the weakly asymmetric exclusion process

Details Cumulants of the current in the weakly asymmetric exclusion process Cumulants of the current in the weakly asymmetric exclusion process

2009-02-03

arxiv.org/abs/0902.0570v2

J. Phys. A: Math. Theor. 42 (2009) 175001

Physics

Condensed Matter

Statistical Mechanics

24 pages, 2 figures

Scientific paper

10.1088/1751-8113/42/17/175001

We study the fluctuations of the total current for the partially asymmetric exclusion process in the scaling of a weak asymmetry (asymmetry of order the inverse of the size of the system) using Bethe Ansatz. Starting from the functional formulation of the Bethe equations, we obtain for all the cumulants of the current both the leading and next-to-leading contribution in the size of the system.

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