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arXiv 2101.04860nucl-th
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通过中子滴探索张量力及其强度的影响

Exploring effects of tensor force and its strength via neutron drops

Zhiheng Wang, Tomoya Naito, Haozhao Liang, Wen Hui Long

摘要:

在相对论Hartree-Fock理论框架下研究了张量力对中子滴自旋轨道分裂演化的影响。为了在纯平均场水平上进行公平的比较,采用相对论Brueckner-Hartree-Fock计算与Bonn A相互作用的结果作为元数据。通过定量分析,证明了$π$ -伪矢量($π$ -PV)耦合通过嵌入的张量力影响演化趋势.通过增大$π$ -PV耦合的强度$f_π$来探索张量力的强度。发现削弱$f_π$的密度依赖性比用因子扩大它稍好。从而在密度泛函理论的框架内为张量力的\textit{renormalization persistency}提供了半定量的支持。这对进一步发展相对论有效相互作用,特别是张量力的研究具有重要的指导意义。

英文摘要:

The tensor-force effects on the evolution of the spin-orbit splittings in the neutron drops are investigated within the framework of the relativistic Hartree-Fock theory. For fair comparisons on the pure mean-field level, the results of the relativistic Brueckner-Hartree-Fock calculation with the Bonn A interaction are adopted as meta-data. Through a quantitative analysis, we certify that the $π$-pseudovector ($π$-PV) coupling affects the evolutionary trend through the tensor force embedded. The strength of the tensor force is explored by enlarging the strength $f_π$ of the $π$-PV coupling. It is found that weakening the density dependence of $f_π$ is slightly better than enlarging it with a factor. We thus provide a semiquantitative support for the \textit{renormalization persistency} of the tensor force within the framework of density functional theory. This will serve as an important guidance for the further development of the relativistic effective interactions with particular focus on the tensor force.

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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