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arXiv 1705.03315nucl-th
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从协变密度泛函及其推广计算$N = 20$同位素中子态的自旋轨道分裂

Spin-orbit splittings of neutron states in $N = 20$ isotones from covariant density functionals and their extensions

Konstantinos Karakatsanis, G. A. Lalazissis, Peter Ring, Elena Litvinova

摘要:

自旋轨道分裂是我们理解原子核壳层结构的一个重要组成部分。相对论平均场(RMF)模型在核物理中最重要的优点之一是,在Dirac方程中包含洛伦兹标量势和洛伦兹矢量势,可以自动产生大的自旋轨道(SO)势。因此,将这些模型的结果与实验数据进行比较是非常重要的。在相对论和非相对论密度泛函的框架下,我们研究了同素链$^{40}$ Ca,$^{38}$ Ar,$^{36}$ S和$^{34}$ Si的$2p$和$1f$分裂的大小.它们与非相对论模型的结果和最近的实验数据进行了比较。

英文摘要:

Spin-orbit splitting is an essential ingredient for our understanding of the shell structure in nuclei. One of the most important advantages of relativistic mean-field (RMF) models in nuclear physics is the fact that the large spin-orbit (SO) potential emerges automatically from the inclusion of Lorentz-scalar and -vector potentials in the Dirac equation. It is therefore of great importance to compare the results of such models with experimental data. We investigate the size of $2p$ and $1f$ splittings for the isotone chain $^{40}$Ca, $^{38}$Ar, $^{36}$S, and $^{34}$Si in the framework of various relativistic and nonrelativistic density functionals. They are compared with the results of nonrelativistic models and with recent experimental data.

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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