Finite-size effects on the dynamics of the zero-range process
Statistical Mechanics
2009-11-13 v2
Abstract
We study finite-size effects on the dynamics of a one-dimensional zero-range process which shows a phase transition from a low-density disordered phase to a high-density condensed phase. The current fluctuations in the steady state show striking differences in the two phases. In the disordered phase, the variance of the integrated current shows damped oscillations in time due to the motion of fluctuations around the ring as a dissipating kinematic wave. In the condensed phase, this wave cannot propagate through the condensate, and the dynamics is dominated by the long-time relocation of the condensate from site to site.
Cite
@article{arxiv.0710.0755,
title = {Finite-size effects on the dynamics of the zero-range process},
author = {Shamik Gupta and Mustansir Barma and Satya N. Majumdar},
journal= {arXiv preprint arXiv:0710.0755},
year = {2009}
}
Comments
5 pages, 5 figures, version published in Phys. Rev. E Rapid Communications