Correlations in nuclei: Configuration Interaction, Coupled-Cluster and beyond

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Abstract

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.

Original languageEnglish
Title of host publicationExotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07
Pages40-48
Number of pages9
DOIs
StatePublished - 2008
EventCarpathian Summer School of Physics 2007, CSSP07 - Sinaia, Romania
Duration: Aug 20 2007Aug 31 2007

Publication series

NameAIP Conference Proceedings
Volume972
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceCarpathian Summer School of Physics 2007, CSSP07
Country/TerritoryRomania
CitySinaia
Period08/20/0708/31/07

Keywords

  • Configuration Interaction
  • Correlations
  • Coupled-Cluster
  • Double beta decay

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