Description of Rotation Bands in 157,158Er at Ultrahigh Spin

• 来源期刊: 理论物理通讯(英文版)
• 年，卷（期）: 2008,（12）
• 页码范围: 1391-1395
• 页数: 5页
• 语种: 英文

摘要

Properties of the four rotation bands,157Er(1,2) and 158Er(1,2), at ultrahigh spin are investigated within the supersymmetry scheme including many-body interactions and possessing the SO(5) (or SU(5)) symmetry on the rotational symmetry. Quantitatively good results of the γ/-ray energies and the dynamical moments of inertia in the rotation bands in 157Er and 158Er at ultrahigh spin are obtained. We theoretically predict that the competition between the anti-pairing and pairing effects may exist in 157Er(1,2) and 158Er(2) bands states. In 158Er(1) band state, the favoure-pairing effects may exist and the SO(5) (or SU(5)) symmetry play a dominant role. There may be sphere coexisting withheadecupole deformed in 158 Er(1) rotation band state.