Signature of the time-dependent hydrodynamic interactions on the   collective diffusion in colloidal monolayers
  It has been shown recently that the coefficient of collective diffusion in a colloidal monolayer is divergent due to the hydrodynamic interactions mediated by the ambient fluid in bulk. The analysis is extended to allow for time--dependent hydrodynamic interactions. Novel observational features specific to this time dependency are predicted. The possible experimental detection in the dynamics of the monolayer is discussed. 
Alvaro Dom\'inguez
cond-mat.soft