Quadrupole collective dynamics from energy density functionals: Collective Hamiltonian and the interacting boson model

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.014302· OSTI ID:21596548

Nomura, K; Vretenar, D ^[1]; Niksic, T ^[2]; Otsuka, T ^[1]; Shimizu, N ^[1]

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1. Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
2. Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb (Croatia)

Microscopic energy density functionals have become a standard tool for nuclear structure calculations, providing an accurate global description of nuclear ground states and collective excitations. For spectroscopic applications, this framework has to be extended to account for collective correlations related to restoration of symmetries broken by the static mean field, and for fluctuations of collective variables. In this paper, we compare two approaches to five-dimensional quadrupole dynamics: the collective Hamiltonian for quadrupole vibrations and rotations and the interacting boson model (IBM). The two models are compared in a study of the evolution of nonaxial shapes in Pt isotopes. Starting from the binding energy surfaces of {sup 192,194,196}Pt, calculated with a microscopic energy density functional, we analyze the resulting low-energy collective spectra obtained from the collective Hamiltonian, and the corresponding IBM Hamiltonian. The calculated excitation spectra and transition probabilities for the ground-state bands and the {gamma}-vibration bands are compared to the corresponding sequences of experimental states.

• OSTI ID: 21596548
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.014302; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
COLLECTIVE EXCITATIONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CORRELATIONS
ENERGY DENSITY
GROUND STATES
HAMILTONIANS
INTERACTING BOSON MODEL
MEAN-FIELD THEORY
NUCLEAR STRUCTURE
PLATINUM 192
PLATINUM 194
PLATINUM 196
SPECTRA
SURFACES
SYMMETRY BREAKING
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVALUATION
EVEN-EVEN NUCLEI
EXCITATION
HEAVY NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NUCLEAR MODELS
NUCLEI
PLATINUM ISOTOPES
QUANTUM OPERATORS
SHELL MODELS
SIMULATION
STABLE ISOTOPES