Waves in strongly-coupled classical one-component plasmas and Yukawa fluids

The wave dispersion relations in the fluid phase of Yukawa systems and classical one-component plasmas (OCPs) are obtained from molecular dynamics (MD) simulations. The Yukawa system is a collection of particles interacting through Yukawa (i.e., screened Coulomb) potentials, which can serve as a simple model for dusty plasmas or colloidal suspensions. The classical OCP is the Yukawa system in the no screening limit. We have demonstrated that the transverse wave dispersion has a cut-off at a long wavelength even in the case of weak or no screening. (orig.)