Large deviations for the boundary driven symmetric simple exclusion process

Abstract

The large deviation properties of equilibrium (reversible) lattice gases are mathematically reasonably well understood. Much less is known in non--equilibrium, namely for non reversible systems. In this paper we consider a simple example of a non--equilibrium situation, the symmetric simple exclusion process in which we let the system exchange particles with the boundaries at two different rates. We prove a dynamical large deviation principle for the empirical density which describes the probability of fluctuations from the solutions of the hydrodynamic equation. The so called quasi potential, which measures the cost of a fluctuation from the stationary state, is then defined by a variational problem for the dynamical large deviation rate function. By characterizing the optimal path, we prove that the quasi potential can also be obtained from a static variational problem introduced by Derrida, Lebowitz, and Speer.

29 pages

References in corpus (4)

• Macroscopic fluctuation theory for stationary non equilibrium states
• Fluctuations in Stationary non Equilibrium States
• Large Deviation of the Density Profile in the Steady State of the Open Symmetric Simple Exclusion Process
• Free Energy Functional for Nonequilibrium Systems: An Exactly Solvable Case

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• Exact solution of the macroscopic fluctuation theory for the symmetric exclusion process
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• Strong asymmetric limit of the quasi-potential of the boundary driven weakly asymmetric exclusion process
• Tricritical behavior in dynamical phase transitions
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• Entropy of stationary nonequilibrium measures of boundary driven symmetric simple exclusion processes
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• From non-symmetric particle systems to non-linear PDEs on fractals
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