28aYJ-7 2 次元ダストプラズマ結晶の分子動力学シミュレーシン : 波動スペクトルの解析 Molecular Dynamics Simulations of Wave Dispersion Relations in Two Dimensional Yukawa fluids

The dynamical form factor and the wave dispersion relations of the two-dimensional Yukawa fluids are obtained by extensive molecular dynamics simulations for a wide range of coupling and the screening parameters. It is observed that, for weak screening, the transverse wave dispersion has a cut-off at a long wavelength. The simulation results are compared with the earlier theoretical predictions of the Yukawa dispersion relations and good agreement is found in the regimes of interest.