Central Configurations in Three Dimensions

Details Central Configurations in Three Dimensions Central Configurations in Three Dimensions

2002-01-15

arxiv.org/abs/hep-th/0201101v2

Proc.Roy.Soc.Lond.A459:911-943,2003

Physics

High Energy Physics

High Energy Physics - Theory

37 pages, 18 figures, 3 as colour jpg files. References added. Version to appear in Proceedings of the Royal Society

Scientific paper

10.1098/rspa.2002.1061

We consider the equilibria of point particles under the action of two body central forces in which there are both repulsive and attractive interactions, often known as central configurations, with diverse applications in physics, in particular as homothetic time-dependent solutions to Newton's equations of motion and as stationary states in the One Component Plasma model. Concentrating mainly on the case of an inverse square law balanced by a linear force, we compute numerically equilibria and their statistical properties. When all the masses (or charges) of the particles are equal, for small numbers of points they are regular convex deltahedra, which on increasing the number of points give way to a multi-shell structure. In the limit of a large number of points we argue using an analytic model that they form a homogeneous spherical distribution of points, whose spatial distribution appears, from our preliminary investigation, to be similar to that of a Bernal hard-sphere liquid.

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