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

Nomura, Kosuke and Nikšić, Tamara and Otsuka, T. and Shimizu, N. and Vretenar, Dario (2011) Quadrupole collective dynamics from energy density functionals: Collective Hamiltonian and the interacting boson model. Physical Review C, 84 (1). pp. 14302-9. ISSN 0556-2813

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Abstract

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 192, 194, 196Pt, 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 γ-vibration bands are compared to the corresponding sequences of experimental states.

Item Type: Article
Date: July 2011
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2011) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jun 2014 12:41
Last Modified: 24 Feb 2016 15:14
URI: http://digre.pmf.unizg.hr/id/eprint/2065

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