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On the dominance of J(P)=0(+) ground states in even-even nuclei from random two-body interactions

R. Bijker·A. Frank·S. Pittel
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Abstract

Recent calculations using random two-body interactions showed a preponderance of J(P)=0(+) ground states, despite the fact that there is no strong pairing character in the force. We carry out an analysis of a system of identical particles occupying orbits with j=1/2, 3/2 and 5/2 and discuss some general features of the spectra derived from random two-body interactions. We show that for random two-body interactions that are not time-reversal invariant the dominance of 0(+) states in this case is more pronounced, indicating that time-reversal invariance cannot be the origin of the 0(+) dominance.

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BibTeXRIS

R. Bijker, A. Frank, S. Pittel. 1999-06-15. On the dominance of J(P)=0(+) ground states in even-even nuclei from random two-body interactions. https://doi.org/10.1103/physrevc.60.021302

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