High-quality variational wave functions for small He-4 clusters
NAGIOS: RODERIC FUNCIONANDO

# High-quality variational wave functions for small He-4 clusters

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 Guardiola Barcena, Rafael; Portesi, M.; Navarro Faus, Jesús Aquest document és un/a article, creat/da en: 1999 We report a variational calculation of ground state energies and radii for 4He_N droplets (3 \leq N \leq 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. Guardiola Barcena, Rafael Portesi, M. Navarro Faus, Jesús 1999 High-quality variational wave functions for small He-4 clusters Physical Review B 60 9 6288 6291 http://dx.doi.org/10.1103/PhysRevB.60.6288