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Comment on "Crossover of collective modes and positive sound dispersion in supercritical state"

arXiv:1612.08671

Abstract

We comment on an expression for positive sound dispersion (PSD) in fluids and analysis of PSD from molecular dynamics simulations reported in the Letter by Fomin et al (J.Phys.:Condens.Matt. v.28, 43LT01, 2016)