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Features of the dielectric permittivity of the Coulomb system and the true dielectric state
Phys. Rev. E 86, 026401 – Published 1 August, 2012
DOI: https://doi.org/10.1103/PhysRevE.86.026401
Abstract
Based on the linear response theory and the diagram technique of the perturbation theory, the correlation between the homogeneous and isotropic Coulomb system permittivity features caused by the nonzero static conductivity and the effects of external electrostatic field screening is determined. The results obtained can be used to study the metal-dielectric transition at zero temperature beyond the scope of the adiabatic approximation for nuclei. It is shown that at the critical point the matter consisting of electrons and nuclei of the same type is in the “true” dielectric state characterized by the zero static conductivity and the absence of screening of the weak electrostatic field.
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