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Abstract
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In a paper on arXiv, Bonitz et al (2012 arXiv:1205.4922v1 [physics.plasm-ph]) (hereafter
referred to as BPS) erroneously attributed the qualitative discrepancy between their density
functional theory (DFT) simulation results with the analytical discovery of the
Shukla–Eliasson (SE) attractive force which brings ions closer to the failure of the linearized
quantum hydrodynamic theory. In this paper, we describe the underlying physics of the novel
SE attractive force and its validity, as well as discuss some of the key features of the
well-established quantum hydrodynamic theory and working mechanisms for DFT
simulations, in addition to giving some critical notes on the falsified and misleading
conclusions presented by BPS in their dubious paper. Furthermore, we also present a
mass-density value for possible 4He metallic plasma lattice formation under the SE force.
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