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

Autori
Nomura, K. ; Vretenar, D. ; Li, Z. P. ; Xiang, J.

Izvornik
Physical Review C (2469-9985) 103 (2021), 5; 054322-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Nuclear Structure

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA