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A simple practical approach to describe transverse (shear) waves instrongly-coupled Yukawa fluids is presented. Theoretical dispersion curves,based on hydrodynamic consideration, are shown to compare favorably withexisting numerical results for plasma-related systems in the long-wavelengthregime. The existence of a minimum wave number below which shear waves cannotpropagate and its magnitude are properly accounted in the approach. Therelevance of the approach beyond plasma-related Yukawa fluids is demonstratedby using experimental data on transverse excitations in liquid metals Fe, Cu,and Zn, obtained from inelastic x-ray scattering. Some potentially importantrelations, scalings, and quasi-universalities are discussed. The results shouldbe interesting for a broad community in chemical physics, materials physics,physics of fluids and glassy state, complex (dusty) plasmas, and soft matter.

Onset of transverse (shear) waves in strongly-coupled Yukawa fluids