A.Faggionato, F.Martinelli
Hydrodynamic limit of a disordered lattice gas
(739K, postscript)

ABSTRACT.  We consider a model of lattice gas dynamics in $Z^d$ in the presence of 
disorder. If the particle interaction is only mutual exclusion and if 
the disorder field is given by i.i.d. bounded random variables, we prove 
the almost sure existence of the hydrodynamical limit in dimension $d>2$. 
The limit equation is a non linear diffusion equation with diffusion 
matrix characterized by a variational principle.