论文标题
相对论的Hartree-Bogoliubov理论中的中子滴在连续性：氧气到钙
Neutron drip line in the deformed relativistic Hartree-Bogoliubov theory in continuum: Oxygen to Calcium
论文作者
论文摘要
中子滴线的位置目前仅以最轻的元素而闻名，仍然是核物理学的基本问题。它的描述是微观核能密度功能的挑战，因为它必须以现实的方式考虑核能，而且还必须配对相关性，变形效应和与连续体的耦合。最近开发的相对论性的Hartree-Bogoliubov理论（DRHBC）旨在在整个核图表中提供对偶数核的统一描述。在这里，具有成功密度功能PC-PK1的DRHBC用于研究变形以及如何影响8 <= Z <= 20的偶数核的中子滴入位置的预测，其中许多同位素被预测。将结果与基于球形相对论连续体Hartree-Bogoliubov（RCHB）理论进行了比较，并以形状进化和变分原理进行了讨论。发现在包括变形效果之后，NE和AR滴水线核是不同的。变化的方向不一定是指向扩展的滴水线，而是取决于变形程度向滴水线的演变。变形效应以及以一致的方式处理的配对和连续效应会影响中子滴水线位置的理论描述。
The location of the neutron drip line, currently known for only the lightest elements, remains a fundamental question in nuclear physics. Its description is a challenge for microscopic nuclear energy density functionals, as it must take into account in a realistic way not only the nuclear potential, but also pairing correlations, deformation effects and coupling to the continuum. The recently developed deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) aims to provide a unified description of even-even nuclei throughout the nuclear chart. Here, the DRHBc with the successful density functional PC-PK1 is used to investigate whether and how deformation influences the prediction for the neutron drip-line location for even-even nuclei with 8<=Z<=20, where many isotopes are predicted deformed. The results are compared with those based on the spherical relativistic continuum Hartree-Bogoliubov (RCHB) theory and discussed in terms of shape evolution and the variational principle. It is found that the Ne and Ar drip-line nuclei are different after the deformation effect is included. The direction of the change is not necessarily towards an extended drip line, but rather depends on the evolution of the degree of deformation towards the drip line. Deformation effects as well as pairing and continuum effects treated in a consistent way can affect critically the theoretical description of the neutron drip-line location.
