Correlations in Nuclei: Configuration Interaction, Coupled-Cluster and Beyond

Details Correlations in Nuclei: Configuration Interaction, Coupled-Cluster and Beyond Correlations in Nuclei: Configuration Interaction, Coupled-Cluster and Beyond

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..972...40h&link_type=abstract

EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (II): Proceedings of the Carpathian Summer School of Physics 2007. AIP Conferen

Astronomy and Astrophysics

Astrophysics

Shell Model, Clusters: Electronic Properties, Equilibrium Geometries, Coupled-Cluster Theory, Beta Decay, Double Beta Decay, Electron And Muon Capture

Scientific paper

Many-body correlations play a central role in the structure of nuclei. The mean-field methods, such as Skyrme Hartree-Fock and its extensions to Energy Density Functionals, induce correlations dynamically at the functional level, leaving the explicit wave functions uncorrelated. The Configuration Interaction (CI) method treats the many-body correlations exactly, but in a small configurations space. It is therefore desirable to include as many correlations as possible in larger model spaces. In this contribution I compare the results of Coupled Cluster techniques and of extrapolations methods, such as the Exponential Convergence Method, with the full CI results for nuclei around 56Ni.

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