Comment on "Lifshitz-Matsubara sum formula for the Casimir pressure between magnetic metallic mirrors"
arXiv:1604.06432 · doi:10.1103/PhysRevE.94.026101
Abstract
Recently Guerout et al. [Phys. Rev. E, v.93, 022108 (2016)] advocated that the lossless plasma model has to be redefined as the limit of the Drude model when the relaxation parameter goes to zero. It was claimed that the previously used plasma model cannot correctly describe the Casimir pressure between two plates made of both nonmagnetic and magnetic metals and has to be replaced with the redefined one. We show that the suggested redefinition does not satisfy necessary physical requirements imposed on the dielectric permittivity. We also present a plausible explanation to the fact that the lossless plasma model describes the Casimir pressure correctly even though it does not match the optical and electrical properties of metals.
3 pages; minor additions have been made in accordance to the version to appear in Phys. Rev. E
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