P. Navratil et Br. Barrett, NO-CORE SHELL-MODEL CALCULATIONS WITH STARTING-ENERGY-INDEPENDENT MULTIVALUED EFFECTIVE INTERACTIONS, Physical review. C. Nuclear physics, 54(6), 1996, pp. 2986-2995
Large-space no-core shell-model calculations have been performed for H
-3, He-4, He-5, Li-6, and He-6, using a starting-energy-independent tw
o-body effective interaction derived by application of the Lee-Suzuki
similarity transformation. This transformation can be performed by dir
ect calculation or by different iteration procedures, which are descri
bed. A possible way of reducing the auxiliary potential influence on t
he two-body effective interaction has also been introduced. The many-b
ody effects have been partially taken into account by employing the re
cently introduced multivalued effective interaction approach. Dependen
ce of the 5He energy levels on the harmonic-oscillator frequency as we
ll as on the size of the model space has been studied. The Reid 93 nuc
leon-nucleon potential has been used in the study, but results have al
so been obtained using the Nijmegen II potential for comparison.