Comment on "Erratum: Collective modes and gapped momentum states in liquid Ga:Experiment, theory, and simulation"
Abstract
We show, that the theoretical expression for the dispersion of collective excitations reported in [Phys. Rev. B 103, 099901 (2021)], at variance with what was claimed in the paper, does not account for the energy fluctuations and does not tend in the long-wavelegth limit to the correct hydrodynamic dispersion law.
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