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arXiv 2011.12642nucl-thnucl-ex
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团簇动力学和单粒子关联的一致性描述

Consistent description for cluster dynamics and single-particle correlation

Naoyuki Itagaki, Tomoya Naito

摘要:

团簇动力学和单粒子关联同时处理的${}^{12} \mathrm{C} $的基态的描述。反对称准团簇模型(AQCM)的发展使得从$α$团簇模型生成$jj$耦合壳模型波函数成为可能。团簇动力学和竞争与$jj$耦合壳模型结构可以很容易地估计。在本研究中,我们进一步考虑了单粒子激发的影响,考虑了两粒子两空穴激发态的混合。在标准的团簇模型分析中,单粒子激发并不总是被考虑在内,而两粒子两空穴态由于类配对关联对基态的降低有很大贡献.通过扩展AQCM,所有的基态都是在同一个基础上制备的,并且它们基于生成坐标法(GCM)的框架叠加。

英文摘要:

Cluster dynamics and single-particle correlation are simultaneously treated for the description of the ground state of ${}^{12} \mathrm{C} $. The recent development of the antisymmetrized quasi cluster model (AQCM) makes it possible to generate $jj$-coupling shell-model wave functions from $α$ clusters models. The cluster dynamics and the competition with the $jj$-coupling shell-model structure can be estimated rather easily. In the present study, we further include the effect of single-particle excitation; the mixing of the two-particle-two-hole excited states is considered. The single-particle excitation is not always taken into account in the standard cluster model analyses, and the two-particle-two-hole states are found to strongly contribute to the lowering of the ground state owing to the pairing-like correlations. By extending AQCM, all of the basis states are prepared on the same footing, and they are superposed based on the framework of the generator coordinate method (GCM).

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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