Transverse current correlations in simple liquids

Abstract

An approximate expression for the memory function associated with transverse current correlations have been evaluated for models both of liquid rubidium and liquid argon. Results for the frequency spectrum of the current correlation function are also presented for a range of wavenumbers and compared, where possible, with those obtained from computer simulation studies. From the memory function an expression for the shear viscosity coefficient may be derived, but the values obtained for the latter near the melting points of the liquids are of the order of 40% smaller than the experimentally determined values.