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Confrontation between the quasiparticle-phonon nuclear model and the interacting boson model for deformed nuclei

  • Nuclei
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Zeitschrift für Physik A Atomic Nuclei

Abstract

TheK π=0+, 2+ and 4+ states are considered in doubly even deformed nuclei. It is shown that in the quasiparticle-phonon nuclear model (QPNM) and in the interacting boson model (IBM) a vibrational state has one dominating component. The states withK π n =0 +3 , 0 +4 0 +5 2 +2 , 2 +3 , 4 +1 and 4 +2 have a dominating one-phonon component within the QPNM and a two- or three-boson component within the IBM. According to the QPNM the contribution of two-phonon components to the wave functions of these states is less than 10%, i.e. there is a qualitative discrepancy in describing the structure of these states within the QPNM and the IBM. The experimental data indicate the existence in these states of one-phonon or two-quasiparticle components. They are rather well described within the QPNM. These states cannot be described within the IBM. This is due to the fact that the IBM takes into account only a small part of the space of two-quasiparticle states, just the one entering intoΒ- andγ-vibrational states.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, USSR

    V. G. Soloviev

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  1. V. G. Soloviev
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The author is grateful to V.O. Nesterenki, A.V. Sushkov and N.Yu. Shirikova for help in numerical calculations.

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Soloviev, V.G. Confrontation between the quasiparticle-phonon nuclear model and the interacting boson model for deformed nuclei. Z. Physik A - Atomic Nuclei 324, 393–401 (1986). https://doi.org/10.1007/BF01290923

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