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From chiral vibration to tilted-axis wobbling within broken chiral symmetry
Physics Letters B ( IF 4.3 ) Pub Date : 2021-04-21 , DOI: 10.1016/j.physletb.2021.136308
R. Budaca

The effect of non-axial rigid alignment of the quasiparticle spins on the behaviour of the chiral partner bands is investigated within a semiclassical treatment of a particle-rotor Hamiltonian. A valence h11/2 proton particle and a h11/2 neutron hole are used to calculate the energy spectrum of the chiral partner bands as a function of the angles defining the rigid alignments of the quasiparticle spins. Distinct dynamical characteristics are identified in specific angular momentum ranges and tilting angles. It is found that the high spin static chirality regime transforms into a wobbling tilted axis rotation at sufficiently high deviations of the quasiparticle spins from the principal intrinsic axes. The experimental realization of the model is exemplified for the chiral bands of 132Pr and 138Pm.



中文翻译:

从手性振动到倾斜的手性对称内的倾斜轴摆动

在粒子转子哈密顿量的半经典处理中研究了准粒子自旋的非轴向刚性排列对手性伴侣带行为的影响。价H11/2个 质子粒子和 H11/2个用中子孔来计算手性伙伴带的能谱,该能谱是定义准粒子自旋的刚性排列的角度的函数。在特定的角动量范围和倾斜角中识别出不同的动力特性。已经发现,在准粒子自旋相对于主本征轴的足够高的偏差下,高自旋静态手性状态转换为摆动的倾斜轴旋转。以132 Pr和138 Pm的手性谱带为例,对该模型进行了实验实现。

更新日期:2021-04-23
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