LARGE DEVIATIONS FOR A REACTION-DIFFUSION MODEL

We obtain large deviation estimates for the empirical measure of a cla ss of interacting particle systems. These consist of a superposition o f Glauber and Kawasaki dynamics and are described, in the hydrodynamic limit, by a reaction diffusion equation. We extend results of Kipnis, Olla and Varadhan for the symmetric exclusion process, and provide an approximation scheme for the rate functional. Some physical implicati ons of our results are briefly indicated.