Dynamical Properties and Plasmon Dispersion of a Weakly Degenerate Correlated One-Component Plasma
V. Golubnychiy, M. Bonitz, D. Kremp, M. Schlanges
Abstract
Classical Molecular Dynamics (MD) simulations for a one-component plasma (OCP) are presented. Quantum effects are included in the form of the Kelbg potential. Results for the dynamical structure factor are compared with the Vlasov and RPA (random phase approximation) theories. The influence of the coupling parameter Γ, degeneracy parameter ρΛ3 and the form of the pair interaction on the optical plasmon dispersion is investigated. An improved analytical approximation for the dispersion of Langmuir waves is presented.
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