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Phys. Rev. Lett. 88, 152502 (2002) [4 pages]

Ab Initio Shell Model Calculations with Three-Body Effective Interactions for p-Shell Nuclei

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Petr Navrátil and W. Erich Ormand
Lawrence Livermore National Laboratory, L-414, P.O. Box 808, Livermore, California 94551

Received 19 November 2001; published 2 April 2002

We present a qualitative improvement of the ab initio no-core shell model (NCSM) approach by implementing three-body interaction capability for p-shell nuclei. We report the first calculations using three-body effective interactions derived from realistic nucleon-nucleon potentials for 6Li, 8Be, and 10B and demonstrate that the use of three-body effective interactions speeds up the convergence of the NCSM approach. For 10B, we predict JπT = 1+0 ground state, contrary to the experimental observation of 3+0, when the AV8 potential is used, indicating the need for true three-body forces.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.152502
DOI:
10.1103/PhysRevLett.88.152502
PACS:
21.60.Cs, 21.10.Dr, 21.30.Fe, 27.20.+n