Coupling of pairing and triaxial shape vibrations in collective states of γ-soft nuclei

Znanstveni rad - Izvorni znanstveni rad

• Autor: Kosuke Nomura
• Autor: Dario Vretenar
• Autor: Z. P. Li
• Autor: J. Xiang
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

In addition to shape oscillations, low-energy excitation spectra of deformed nuclei are also influenced by pairing vibrations. The simultaneous description of these collective modes and their coupling has been a long-standing problem in nuclear structure theory. Here we address the problem in terms of self-consistent mean-field calculations of collective deformation-energy surfaces, and the framework of the interacting boson approximation. In addition to quadrupole shape vibrations and rotations, the explicit coupling to pairing vibra- tions is taken into account by a boson- number nonconserving Hamiltonian, specified by a choice of a universal density functional and pairing interaction. An illustrative calculation for 128Xe and 130Xe shows the importance of dynamical pairing degrees of freedom, especially for structures built on low- energy 0+ excited states, in γ -soft and triaxial nuclei.

• Ključne riječi (engleski): nuclear structure
• 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
• Brojčani podaci: vol. 103, br. 5, 054322
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.103.054322
• URN:NBN: urn:nbn:hr:217:524998
• Datum objave publikacije: 2021
• Projekt: Šifra: TTP-2018-07-3554; Naziv (hrvatski): Exotic Nuclear Structure and Dynamics; Naziv (engleski): Exotic Nuclear Structure and Dynamics; Kratica: ExoNSD; Voditelj: Kosuke Nomura; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: TTP
• Projekt: Šifra: KK.01.1.1.01.0004; Naziv (engleski): QuantiXLie Center of Excellence; Kratica: QuantiXLie; Voditelj: Hrvoje Buljan, Pavle Pandžić; Pravna nadležnost: eu; Financijer: Croatian Government and European Union; Linija financiranja: European Regional Development Fund - the Competitiveness and Cohesion Operational Programme
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevC.103.054322
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2021 American Physical Society. Received 16 November 2020; Revised 26 March 2021; Accepted 12 May 2021; Published 25 May 2021.
• Datum i vrijeme pohrane: 2023-08-08 10:34:55