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• W2092970347 abstract "We report the first no-core shell model results for $^{48}Ca$, $^{48}Sc$ and $^{48}Ti$ with derived and modified two-body Hamiltonians. We use an oscillator basis with a limited $hbarOmega$ range around $45/A^{1/3}-25/A^{2/3} = 10.5 MeV$ and a limited model space up to $1hbarOmega$. No single-particle energies are used. We find that the charge dependence of the bulk binding energy of eight A=48 nuclei is reasonably described with an effective Hamiltonian derived from the CD-Bonn interaction while there is an overall underbinding by about 0.4 MeV/nucleon. However, the resulting spectra exhibit deficiencies that are anticipated due to: (1) basis space limitations and/or the absence of effective many-body interactions; and, (2) the absence of genuine three-nucleon interactions. We then introduce additive isospin-dependent central terms plus a tensor force to our Hamiltonian and achieve accurate binding energies and reasonable spectra for all three nuclei. The resulting no-core shell model opens a path for applications to the double-beta ($betabeta$) decay process." @default.
• W2092970347 created "2016-06-24" @default.
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• W2092970347 date "2009-06-26" @default.
• W2092970347 modified "2023-09-26" @default.
• W2092970347 title "A no-core shell model for48Ca,48Sc and48Ti" @default.
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• W2092970347 doi "https://doi.org/10.1088/0954-3899/36/8/085103" @default.
• W2092970347 hasPublicationYear "2009" @default.
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