Spohn, HerbertYau, Horng-Tzer2017-05-181995Spohn, Herbert, and Horng-Tzer Yau. 1995. “Bulk Diffusivity of Lattice Gases Close to Criticality.” Journal of Statistical Physics 79 (1-2) (April): 231–241. doi:10.1007/bf02179388.0022-4715http://nrs.harvard.edu/urn-3:HUL.InstRepos:32706721We consider lattice gases where particles jump at random times constrained by hard-core exclusion (simple exclusion process with speed change). The conventional theory of critical slowing down predicts that close to a critical point the bulk diffusivity vanishes as the inverse compressibility. We confirm this claim by proving a strictly positive lower bound for the conductivity.en-USConductivityconservative dynamicscritical slowing downdiffusivitylattice gasessimple exclusion with speed changeJournal Article2017-05-1810.1007/BF02179388