Static dielectric constant of aqueous electrolyte solutions: Is there any dynamic contribution?

We investigate the presence of dynamic cross correlation between ionic current and collective dipole moment fluctuations and the contribution of such dynamic cross correlations to the static dielectric constant of electrolyte solutions by means of a series of sufficiently long molecular dynamics simulations of aqueous NaCl and KCl solutions at different concentrations ranging from 0.88 M to 4.5 M. (C) 2000 American Institute of Physics. [S0021-9606(00)51327-0].