Viscosity estimates for strongly coupled Yukawa systems

An analytic form for the shear viscosity of a Yukawa system, in terms of the known result for the one-component plasma, is given by establishing an analytic correspondence between the Yukawa and one-component plasma systems. The correspondence is found by ensuring that the Yukawa system and the reference one-component plasma have identical effective hard-sphere packing fractions, as determined by the Gibbs-Bogolyubov inequality. The resulting prediction for the freezing transition is compared with known simulation results. These results are useful for describing dynamical properties of Yukawa systems, and the method can be easily generalized to mixtures.