Robust Regularity in γ-Soft Nuclei and Its Microscopic Realization (CROSBI ID 183284)
Prilog u časopisu | Pismo (znanstveno) | međunarodna recenzija
Podaci o odgovornosti
Nomura, Kosuke ; Shimizu, Noritaka ; Vretenar, Dario ; Nikšić, Tamara ; Otsuka, Takaharu
engleski
Robust Regularity in γ-Soft Nuclei and Its Microscopic Realization
γ softness in atomic nuclei is investigated in the framework of energy density functionals. By mapping constrained microscopic energy surfaces for a set of representative nonaxial medium- heavy and heavy nuclei to a Hamiltonian of the proton-neutron interacting boson model (IBM-2) containing up to three-body interactions, low-lying collective spectra and transition rates are calculated. Observables are analyzed that distinguish between the two limiting geometrical pictures of nonaxial nuclei: the rigid-triaxial rotor and the γ-unstable rotor. It is shown that neither of these pictures is realized in actual nuclei, and that a microscopic description leads to results that are almost exactly in between the two geometrical limits. This finding points to the optimal choice of the IBM Hamiltonian for γ-soft nuclei.
nuclear energy density functional; interacting boson model; gamma-soft nucle
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Podaci o izdanju
108 (13)
2012.
132501-1-132501-5
objavljeno
0031-9007
10.1103/PhysRevLett.108.132501