Excess entropy scaling of the transverse sound speed in simple fluids

Sergey Khrapak

doi:10.1063/5.0335103

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arXiv · 2605.25972

Excess entropy scaling of the transverse sound speed in simple fluids

Sergey Khrapak

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Abstract

A calculation of the transverse sound velocity as a function of excess entropy is presented for several simple fluids, including the Lennard-Jones, Yukawa, one-component plasma, inverse-power law (soft sphere) and hard sphere models. A quasi-universal character of this dependence is established, extending Rosenfeld's excess-entropy scaling of transport coefficients to the transverse sound velocity. The results are discussed in terms of the soft- to hard-sphere crossover and the Frenkel crossover between gas-like and liquid-like dynamics.

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Sergey Khrapak. 2026-05-25. Excess entropy scaling of the transverse sound speed in simple fluids. https://doi.org/10.1063/5.0335103

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