Approximate symmetries in the Interacting Boson Model

Symmetries in the Interacting Boson Model

We study the energy level statistics of the states in U(5) and O(6) dynamical symmetries of the interacting boson model and the high spin states with backbending in U(5) symmetry. In the calculations, the degeneracy resulting from the additional quantum number is eliminated manually. The calculated results indicate that the finite boson number N effect is prominent. When N has a value close to ...

Energy Level Statistics of the U(5) and O(6) Symmetries in the Interacting Boson Model

We study the energy level statistics of the states in U(5) and O(6) dynamical symmetries of the interacting boson model and the high spin states with backbending in U(5) symmetry. In the calculations, the degeneracy resulting from the additional quantum number is eliminated manually. The calculated results indicate that the finite boson number N effect is prominent. When N has a value close to ...

The Interacting Boson Approximation Model and Applications

Global calculations with the interacting Boson model

The use of the interacting boson model is proposed for systematic calculations of nuclear properties for large regions of the nuclear chart, including exotic nuclei. In the simplest approach a constant hamiltonian is adopted for all nuclei and nuclear shape transitions are governed solely by total boson number or, equivalently, by total valence particle number. More sophisticated methods requir...

Interacting Boson Model of Collective Octupole States

We discuss the problem of describing low-lying collective negative-parity states within the framework of the interacting boson model. We suggest that a simultaneous description of quadrupole and octupole states in nuclei be done in terms of the group U(16), which includes fand p-bosons in addition to the usual dand s-bosons. We analyze the dynamical symmetries associated with the rotational lim...