期刊
PHYSICAL REVIEW C
卷 101, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.101.064301
关键词
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资金
- NSFC [11765015, 11875225, 11675065, 11790325]
- Joint Fund Project of Education Department in Guizhou Province [[2016]312, [2018]433]
- Qiannan normal University Initial Research Foundation [qnsyrc201617]
- science and technology program foundation of Guizhou province [[2019]QNSYXM-03]
- QuantiXLie Centre of Excellence
- Croatian Government
- European Union through the European Regional Development Fund-the Competitiveness and Cohesion Operational Programme [KK.01.1.1.01]
- Fok Ying-Tong Education Foundation, China
The quadrupole collective Hamiltonian, based on relativistic energy density functionals, is extended to include a pairing collective coordinate. In addition to quadrupole shape vibrations and rotations, the model describes pairing vibrations and the coupling between shape and pairing degrees of freedom. The parameters of the collective Hamiltonian are determined by constrained self-consistent relativistic mean-field plus Bardeen-Cooper-Schrieffer (RMF+BCS) calculations in the space of intrinsic shape and pairing deformations. The effect of coupling between shape and pairing degrees of freedom is analyzed in a study of low-energy spectra and transition rates of four axially symmetric N = 92 rare-earth isotones. When compared to results obtained with the standard quadrupole collective Hamiltonian, the inclusion of dynamical pairing increases the moment of inertia, lowers the energies of excited 0(+) states, and reduces the E0 transition strengths, in better agreement with data.
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