Emergent Sp(3,R) Dynamical Symmetry in the Nuclear Many-Body System from an Ab Initio Description.
Emergent Sp(3,R) Dynamical Symmetry in the Nuclear Many-Body System from an Ab Initio Description.
复制标题
从头算描述核多体系统中的涌现 Sp(3,R) 动力学对称性。
DOI：
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发表时间：
2020
影响因子：
8.6
通讯作者：
P. Fasano
中科院分区：
文献类型：
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作者：
A. McCoy;M. Caprio;T. Dytrych;P. Fasano
从头算核理论不仅为定量描述核多体系统提供了微观框架，而且为深入理解突现集体关联提供了基础。在从头算预测中，从非核心组态相互作用方法确定了辛Sp（3，R）<$U（3）动力学对称性，并发现提供了对^{7}Be光谱的定性理解。低激发态形成艾略特SU（3）谱，而Sp（3，R）激发则产生一个与基态带有强四极连接的激发转动带。
Ab initio nuclear theory provides not only a microscopic framework for quantitative description of the nuclear many-body system, but also a foundation for deeper understanding of emergent collective correlations. A symplectic Sp(3,R)⊃U(3) dynamical symmetry is identified in ab initio predictions, from a no-core configuration interaction approach, and found to provide a qualitative understanding of the spectrum of ^{7}Be. Low-lying states form an Elliott SU(3) spectrum, while an Sp(3,R) excitation gives rise to an excited rotational band with strong quadrupole connections to the ground state band.