An Exact Formula for the Statistics of the Current in the TASEP with Open Boundaries

Alexandre Lazarescu (1) , Kirone Mallick (1)

1 IPHT - Institut de Physique Théorique - UMR CNRS 3681

We study the totally asymmetric exclusion process (TASEP) on a finite one-dimensional lattice with open boundaries, i.e., in contact with two reservoirs at different potentials. The total (time-integrated) current through the system is a random variable that scales linearly with time in the long time limit. We give a parametric representation for the generating function of the cumulants of the current, which is related to the large deviation function by Laplace transform. This formula is valid for all system sizes and for all values of the boundary coupling parameters.

Mots clés: current fluctuations; large deviations; ASEP; open boundaries

Domaines: Mécanique statistique [cond-mat.stat-mech]

Alexandre Lazarescu, Kirone Mallick. An Exact Formula for the Statistics of the Current in the TASEP with Open Boundaries. Journal of Physics A: Mathematical and Theoretical, 2011, 44 (31), pp.315001. ⟨10.1088/1751-8113/44/31/315001⟩. ⟨cea-02923997⟩