Ground state of a large number of particles on a frozen topography

Details Ground state of a large number of particles on a frozen topography Ground state of a large number of particles on a frozen topography

2006-01-25

arxiv.org/abs/cond-mat/0601586v1

Phys. Rev. E 72, 036110 (2005)

Physics

Condensed Matter

Statistical Mechanics

9 pages, 9 figures, LaTeX file

Scientific paper

10.1103/PhysRevE.72.036110

Problems consisting in finding the ground state of particles interacting with a given potential constrained to move on a particular geometry are surprisingly difficult. Explicit solutions have been found for small numbers of particles by the use of numerical methods in some particular cases such as particles on a sphere and to a much lesser extent on a torus. In this paper we propose a general solution to the problem in the opposite limit of a very large number of particles M by expressing the energy as an expansion in M whose coefficients can be minimized by a geometrical ansatz. The solution is remarkably universal with respect to the geometry and the interaction potential. Explicit solutions for the sphere and the torus are provided. The paper concludes with several predictions that could be verified by further theoretical or numerical work.

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