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

Journal Article · Thu Jan 24 00:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2870367· OSTI ID:21052877

Horoi, Mihai ^[1]

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1. Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)

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.

• OSTI ID: 21052877
• Journal Information: AIP Conference Proceedings, Vol. 972, Issue 1; Conference: Carpathian summer school of physics 2007 on exotic nuclei and nuclear/particle astrophysics (II), Sinaia (Romania), 21-31 Aug 2007; Other Information: DOI: 10.1063/1.2870367; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
CONFIGURATION INTERACTION
CORRELATIONS
DOUBLE BETA DECAY
ENERGY DENSITY
EXTRAPOLATION
FUNCTIONALS
HARTREE-FOCK METHOD
MANY-BODY PROBLEM
MEAN-FIELD THEORY
NICKEL 56
SHELL MODELS
SKYRME POTENTIAL
WAVE FUNCTIONS