Dynamic local field correction of the strongly coupled one-component plasma

Molecular dynamics simulations are used to compute the dynamic local field correction (LFC) of the classical one-component plasma in the strongly coupled regime [1]. The LFC plays a critical role for the description of the density response function as it contains all correlation effects. Particular attention is given to the LFC in the long wavelength limit. Here, the simulation data are compared with the viscoelastic model of Ichimaru and Tanaka [2]. In addition, the relation of the LFC to thermodynamic and transport coefficients is studied in some detail using a hydrodynamic model [3]. The results should prove useful for linear response calculations under strong coupling conditions and to test the accuracy of analytical theories for the LFC.

[1] H. Kählert, Phys. Plasmas 31, 092109 (2024).

[2] S. Ichimaru and S. Tanaka, Phys. Rev. Lett. 56, 2815 (1986).

[3] P. Vieillefosse and J. P. Hansen, Phys. Rev. A 12, 1106 (1975).