Large Shell Model Calculations for Calcium Isotopes: Spectral Statistics and Chaos

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dc.creatorManfredi, V. R.
dc.creatorGomez, J. M. G.
dc.creatorSalasnich, L.
dc.date1998-05-27
dc.date.accessioned2026-07-07T05:42:24Z
dc.date.available2026-07-07T05:42:24Z
dc.descriptionWe perform large shell model calculations for Calcium isotopes in the full fp shell by using the realistic Kuo-Brown interaction. The Calcium isotopes are especially interesting because the nearest-neighbour spacing distribution P(s) of low-lying energy levels shows significant deviations from the predictions of the Gaussian Orthogonal Ensemble of random--matrix theory. This contrasts with other neighbouring nuclei which show fully chaotic spectral distributions. We study the chaotic behaviour as a function of the excitation energy. In addition, a clear signature of chaos suppression is obtained when the single-particle spacings are increased. In our opinion the relatively weak strength of the neutron-neutron interaction is unable to destroy the regular single-particle mean-field motion completely. In the neighbouring nuclei with both protons and neutrons in valence orbits, on the other hand, the stronger proton-neutron interaction would appear to be sufficient to destroy the regular mean-field motion.
dc.descriptionLatex, 7 pages, 2 postscript figures, to be published in the Proceedings 'Highlights of Modern Nuclear Structure', S. Agata sui due Golfi (italy), Ed. A. Covello (World Scientific)
dc.identifierhttps://arxiv.org/abs/nucl-th/9805049
dc.identifierhttp://arxiv.org/abs/nucl-th/9805049
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/82918
dc.subjectNuclear Theory
dc.titleLarge Shell Model Calculations for Calcium Isotopes: Spectral Statistics and Chaos
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