Cluster correlations, clustering and halo structure Original Research Article

The performances of uncorrelated single-configuration microscopic models, uncorrelated bases and correlated bases are compared. The correlated bases yield (almost) exact results for A⩽8 nuclei, which turn out to be very difficult to approximate with uncorrelated bases. Clustering and halo structure are visualized by plots of two-particle correlation functions obtained by nearly exact calculations with correlated Gaussian bases. It is shown that clustering may be present in a single-configuration uncorrelated but antisymmetrized microscopic model state as well, but it is much less pronounced than what is produced by the realistic calculation.