Calculation of Thermodynamic Characteristics and Sound Velocity for Two-Dimensional Yukawa Fluids Based on a Two-Step Approximation for the Radial Distribution Function

Fairushin, I. I.; Мокшин, А. В.

doi:10.3390/fluids8020072

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Theoretical Formalism1

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2023

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Cited by 2 publications

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“…Thus, to calculate S(k, ω) within the self-consistent relaxation theory, one needs to know the first four frequency relaxation parameters. For the case of the COCP, the following exact microscopic expressions for first-and second-order parameters are known [13,30,[33][34][35][36]:…”

Section: Theoretical Formalismmentioning

confidence: 99%

Collective ion dynamics in Coulomb one-component plasmas within the self-consistent relaxation theory

Fairushin,

Mokshin

2023

Phys. Rev. E

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In this paper, we present the theoretical formalism describing the collective ion dynamics of the nonideal Coulomb classical one-component plasmas on the basis of the self-consistent relaxation theory. The theory is adapted to account for correlations between the frequency relaxation parameters that characterize the three-and four-particle dynamics and the parameters associated with the twoparticle dynamics. The dynamic structure factor spectra and dispersion characteristics calculated for a wide range of wave numbers are in agreement with the molecular dynamics simulation data and the results obtained with the theory of the frequency moments. The proposed formalism reproduces all the features inherent to the Coulomb one-component plasmas and requires only knowledge of the coupling parameter and the information about the structure.

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