Dynamical correlations and collective excitations of Yukawa liquids

Details Dynamical correlations and collective excitations of Yukawa liquids Dynamical correlations and collective excitations of Yukawa liquids

2008-08-14

arxiv.org/abs/0808.1963v1

Physics

Plasma Physics

54 pages, 31 figures

Scientific paper

10.1088/0953-8984/20/41/413101

In dusty (complex) plasmas, containing mesoscopic charged grains, the grain-grain interaction in many cases can be well described through a Yukawa potential. In this Review we summarize the basics of the computational and theoretical approaches capable of describing many-particle Yukawa systems in the liquid and solid phases and discuss the properties of the dynamical density and current correlation spectra of three- and two-dimensional strongly coupled Yukawa systems, generated by molecular dynamics simulations. We show details of the $\omega(k)$ dispersion relations for the collective excitations in these systems, as obtained theoretically following the quasilocalized charge approximation, as well as from the fluctuation spectra created by simulations. The theoretical and simulation results are also compared with those obtained in complex plasma experiments.

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