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arXiv 1108.5587nucl-th
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用相干态模型描述三轴核的新特征

New features of the triaxial nuclei described with a coherent state model

A. A. Raduta, P. Buganu, Amand Faessler

摘要:

在液滴模型(LDM)哈密顿量的基础上,增加了六次振子,变量$β$中加入了离心项,并在$γ$中加入了势,最小值在$\fracπ{6}$中,从而将薛定谔方程分离为两个变量,得到了一种新的描述三轴核的方法,称为六次马蒂厄方法(SMA). SMA被应用于两个非轴核,$^{180}$ Hf和$^{182}$ W,并与相干态模型(CSM)的结果进行了比较。作为本文的主要结果,我们从CSM哈密顿量的半经典处理中解析地推导出表征SMA的方程。以这种方式,$β$和$γ$变量中的电位分别以非常自然的方式显示,这与SMA从LDM出现时的特定选择形成对比。

英文摘要:

Supplementing the Liquid Drop Model (LDM) Hamiltonian, written in the intrinsic reference frame, with a sextic oscillator plus a centrifugal term in the variable $β$ and a potential in $γ$ with a minimum in $\fracπ{6}$, the Schödinger equation is separated for the two variables which results in having a new description for the triaxial nuclei, called Sextic and Mathieu Approach (SMA). SMA is applied for two non-axial nuclei, $^{180}$Hf and $^{182}$W and results are compared with those yielded by the Coherent State Model (CSM). As the main result of this paper we derive analytically the equations characterizing SMA from a semi-classical treatment of the CSM Hamiltonian. In this manner the potentials in $β$ and $γ$ variables respectively, show up in a quite natural way which contrasts their ad-hoc choice when SMA emerges from LDM.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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