Universal cumulants of the current in diffusive systems on a ring
Statistical Mechanics
2010-05-11 v1
Abstract
We calculate exactly the first cumulants of the integrated current and of the activity (which is the total number of changes of configurations) of the symmetric simple exclusion process (SSEP) on a ring with periodic boundary conditions. Our results indicate that for large system sizes the large deviation functions of the current and of the activity take a universal scaling form, with the same scaling function for both quantities. This scaling function can be understood either by an analysis of Bethe ansatz equations or in terms of a theory based on fluctuating hydrodynamics or on the macroscopic fluctuation theory of Bertini, De Sole, Gabrielli, Jona-Lasinio and Landim.
Keywords
Cite
@article{arxiv.0804.2590,
title = {Universal cumulants of the current in diffusive systems on a ring},
author = {Cécile Appert-Rolland and Bernard Derrida and Vivien Lecomte and Frédéric Van Wijland},
journal= {arXiv preprint arXiv:0804.2590},
year = {2010}
}