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Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation

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    SYSNO ASEP0307918
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleProlate-oblate shape-phase transition in the O(6) description of nuclear rotation
    TitleFázový přechod mezi protáhlým a sploštělým tvarem v O (6) popisu jaderné rotace
    Author(s) Thiamová, Gabriela (UJF-V)
    Cejnar, P. (CZ)
    Source TitleNuclear Physics. A. - : Elsevier - ISSN 0375-9474
    Roč. 765, 1-2 (2006), s. 97-111
    Number of pages15 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsNTERACTING-BOSON MODEL
    Subject RIVBG - Nuclear, Atomic and Molecular Physics, Colliders
    CEZAV0Z10480505 - UJF-V (2005-2011)
    AnnotationRecently it has been shown that the O(6)-based Hamiltonian of the interacting boson model (IBM) with three-body interactions parallels the traditional SU(3) description of nuclear rotation in a way which is closely related to the Bohr-Mottelson model. Here we focus on properties of quantum phase transitions between prolate and oblate ground-state shapes induced by the sign inversion of the cubic interaction. The classical-limit analysis shows that the phase structure of our model is partly analogous to that of the standard IBM with only two-body interactions. A triple point of spherical, prolate and oblate phases is identified within the O(6) dynamical symmetry. Quadrupole shape invariants and wave-function overlaps are applied to measure the phase-transitional rate at a realistic number of bosons. (c) 2005 Elsevier B.V. All rights reserved.
    WorkplaceNuclear Physics Institute
    ContactMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
    Year of Publishing2008
Number of the records: 1  

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