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

Znanstveni rad - Izvorni znanstveni rad

• Autor: Kosuke Nomura
• Autor: Tamara Nikšić
• Autor: T. Otsuka
• Autor: N. Shimizu
• Autor: Dario Vretenar
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

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.

• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C - Nuclear Physics
• Brojčani podaci: vol. 84, br. 1, 014302
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.84.014302
• URN:NBN: urn:nbn:hr:217:377738
• Datum objave publikacije: 2011
• Projekt: Šifra: 119-1191005-1010; Naziv (hrvatski): Nuklearna struktura i nuklearna astrofizika; Voditelj: Dario Vretenar; Pravna nadležnost: Hrvatska; Financijer: MZOS; Linija financiranja: ZP
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevC.84.014302
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2011) by the American Physical Society. Received 24 April 2011; revised manuscript received 2 June 2011; published 6 July 2011.
• Datum i vrijeme pohrane: 2019-11-15 15:49:07