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High-quality variational wave functions for small 4He clusters

R. Guardiola, M. Portesi, J. Navarro

physics.atm-clusarXiv:physics/9904037

Abstract

We report a variational calculation of ground state energies and radii for 4HeN droplets (3 ≤ N ≤ 40), using the atom-atom interaction HFD-B(HE). The trial wave function has a simple structure, combining two- and three-body correlation functions coming from a translationally invariant configuration-interaction description, and Jastrow-type short-range correlations. The calculated ground state energies differ by around 2% from the diffusion Monte Carlo results.

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