Wave analysis of Yukawa liquids and solids using molecular dynamics simulations

摘要

The wave properties for two-dimensional (2D) Yukawa liquids and solids have been investigated using Equilibrium molecular dynamics (EMD) technique for the first time. In present work, the longitudinal current correlation (LCC) $mathrm{C}_{L}(k, t)$ and the transverse current correlation (TCC) $mathrm{C}_{T}(k, t)$ functions have been computed for plasma parameters of Debye screening strength $kappa$ and the Coulomb coupling parameter $Gamma$ and explain the oscillation, frequency and damping behavior of the waves. New simulations provide the modes of wave propagation in 2D Yukawa liquids and solids with series of increasing frequency ($omega$) and decreasing frequency ($omega$) at different combinations of plasmas parameters ($kappa, Gamma$). The obtained results from present simulations for 2D dusty plasma liquids and solids have been compared and discussed with previous known results from simulation and theoretical calculations, by using different numerical methods.