Exact diagonalization of the Bohr Hamiltonian for rotational nuclei: Dynamical gamma softness and triaxiality

Abstract

Detailed quantitative predictions are obtained for phonon and multiphonon excitations in well-deformed rotor nuclei within the geometric framework, by exact numerical diagonalization of the Bohr Hamiltonian in an SO(5) basis. Dynamical gamma deformation is found to significantly influence the predictions through its coupling to the rotational motion. Basic signatures for the onset of rigid triaxial deformation are also obtained.

17 pages, 10 figures; to be published Phys. Rev. C

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Cited by in corpus (9)

• Diversity of shapes and rotations in the gamma-soft 130Ba nucleus: first observation of a t-band in the A=130 mass region
• The Low-Energy Quadrupole Mode of Nuclei
• Rotational constants of multi-phonon bands in an effective theory for deformed nuclei
• Description of the low-lying collective states of ${}^{96}$Zr based on the quadrupole-collective Bohr Hamiltonian
• Triaxiality explored by an odd quasi-particle
• Evolution of the phenomenologically determined collective potential along the chain of Zr isotopes
• Effective field theories for collective excitations of atomic nuclei
• Coriolis contribution to excited states of odd-mass nuclei with different deformation-dependent mass coeffcients
• Triaxial projected shell model study of $\gamma$-bands in atomic nuclei