Minimum-Coulomb-energy electrostatic configurations

Anharmonic corrections to the electrostatic energy of a Coulomb crystal

Model calculations of the electrostatic energy of body-centered-cubic and face-centeredcubic Coulomb crystals are presented. The electrostatic energy is calculated using a pair distribution function of ions in the harmonic approximation. This distribution function is shown to be in a good agreement with the function derived by the Monte Carlo method in the high-temperature classical limit (Tb_o...

Minimum energy state of the one-dimensional Coulomb chain

One-dimensional chains of laser-cooled ions have recently been confined in the fields of electromagnetic traps. This paper considers the minimum energy states of this one-dimensional ~1D! form of condensed matter. Molecular dynamics simulations of the minimum energy states are compared to a density functional theory of the inhomogeneous crystal. Unlike 2D and 3D inhomogeneous Coulombic systems,...

Diversity driven unbiased search of minimum energy cluster configurations.

The determination of the spatial distributions that atoms adopt to form condensed matter is a problem of crucial importance, since most physical properties depend on the atomic arrangement. This is especially relevant for clusters, where periodicity is nonexistent. Several optimization procedures have been implemented to tackle this problem, with ever increasing success. Here we put forward a s...

Intermediate - Energy Coulomb Excitation

Genetic algorithms for generating minimum path configurations

Solving a problem on a distributed memory multiprocessor system requires the individual processors to co-operate when necessary, by exchanging messages. These messages are transferred between processors across links which interconnect the processors. If the number of links available at each processor is not restricted then the system may be fully interconnected, having a maximumdistance between...