Critical dynamics of diluted relaxational models coupled to a conserved density.
We consider the influence of quenched disorder on the relaxational critical dynamics of a system characterized by a nonconserved order parameter coupled to the diffusive dynamics of a conserved scalar density (model C). Disorder leads to model A critical dynamics in the asymptotics; however, it is the effective critical behavior that is often observed in experiments and in computer simulations, and this is described by the full set of dynamical equations of diluted model C. Indeed, different scenarios of effective critical behavior are predicted.
Dudka
M
M
Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, UA-79011 Lviv, Ukraine and Institute for Theoretical Physics, University of Linz, A-4040 Linz, Austria.
Folk
R
R
Holovatch
Yu
Y
Moser
G
G