Memoirs of the Faculty of Engineering, Okayama University 30巻 1号
1995-12-28 発行
東辻 浩夫
Department of Electrical and Electronic Engineering
井上 嘉彦
Department of Electrical and Electronic Engineering
岸本 篤也
Department of Electrical and Electronic Engineering
東辻 千枝子
Department of Electrical and Electronic Engineering
Molecular dynamics of the Yukawa system, the system of particles interacting via the Yukawa or the screened Coulomb potential, are formulated for various statistical ensembles and external conditions. The Yukawa potential smoothly interpolates the long-range Coulomb and the short-range interactions by adjusting a single parameter, the
screening length. In order to reduce the effect of boundaries, the periodic boundary conditions are imposed and the deformations of the fundamental vectors of periodicity are taken into account. Ewald-type expressions for interaction energy, force, and kinematic pressure are
given explicitly.