Global Optima of Lennard-Jones Clusters

  • Authors:
  • Robert H. Leary

  • Affiliations:
  • San Diego Supercomputer Center, San Diego, CA 92138, URL: http://www.sdsc.edu/~leary, Email: leary@sdsc.edu.

  • Venue:
  • Journal of Global Optimization
  • Year:
  • 1997

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper summarizes the current state of knowledge concerning putative global minima of the potential energy function for Lennard-Jones clusters, an intensely studied molecular conformation problem. Almost all known exceptions to global optimality of the well-known Northby multilayer icosahedral conformations for microclusters are shown to be minor variants of that geometry. The truly exceptional case of face-centered cubic lattice conformations is examined and connections are made with the macrocluster problem. Several types of algorithms and their limitations are explored, and a new variation on the growth sequence idea is presented and shown to be effective for both small and large clusters.