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$^4$He energies and radii by the coupled-cluster method with many-body average potential
- Publication Year :
- 2012
-
Abstract
- The reformulated coupled-cluster method (CCM), in which average many-body potentials are introduced, provides a useful framework to organize numerous terms appearing in CCM equations, which enables us to clarify the structure of the CCM theory and physical importance of various terms more easily. We explicitly apply this framework to $^4$He, retaining one-body and two-body correlations as the first illustrating attempt. Numerical results with using two modern nucleon-nucleon interactions (AV18 and CD-Bonn) and their low-momentum interactions are presented. The characters of short-range and many-body correlations are discussed. Although not considered explicitly, the expression of the ground-state energy in the presence of a three-nucleon force is given.<br />Comment: 12 pages, 11 figures, accepted for publication in PRC
- Subjects :
- Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1206.5892
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.86.014317