Microscopic theory of the long-wavelength modes of two-component plasmas and ionic liquids

Marc Baus

Physica A: Statistical Mechanics and its Applications, 1977, vol. 88, issue 3, 591-599

Abstract: The identity between the exact screening length obtained from the static charge density correlation function and the one which appears in the Einstein relation between the transport coefficients of electrical conductivity and mass diffusion is demonstrated from first principles. For the space-time correlation functions of the number densities we show that their long-wavelength behaviour is completely determined by the four hydrodynamical modes of the two-component system of neutral particles. For charged particle systems there are only three hydrodynamical modes while we have moreover to add the two charge relaxation modes in order to exhaust the long-wavelength limit of the first sum-rule. The strengths with which the various modes appear in the space-time correlation functions have been computed exactly in the limit of long wavelengths.

Date: 1977
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:88:y:1977:i:3:p:591-599

DOI: 10.1016/0378-4371(77)90130-3

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