标题： 从相对论布雷克纳-哈特里-福克理论得到的微观光学势：质子-核散射 显示英文标题

标题： Microscopic optical potential from the relativistic Brueckner-Hartree-Fock theory: Proton-nucleus scattering

摘要： 基于改进的局域密度近似，利用\emph{从头计算}相对论布雷克纳-哈特里-福克（RBHF）理论发展了一个相对论微观光学势模型，该模型简称为 RBOM 势。对称和非对称核物质在不同密度下的单粒子势的实部和虚部在完整的狄拉克空间中被唯一确定。靶核的密度分布通过协变能量密度泛函理论与密度泛函 PC-PK1 计算得出。光学势的中心项和自旋-轨道项与相对论经验光学势在定量上一致。通过考虑质子在入射能量$E\leq 200$MeV 下对五个靶核$\prescript{208}{}{\text{Pb}}$、$\prescript{120}{}{\text{Sn}}$、$\prescript{90}{}{\text{Zr}}$、$\prescript{48}{}{\text{Ca}}$和$\prescript{40}{}{\text{Ca}}$的散射来评估 RBOM 势的性能。分析了包括弹性散射角分布、分析能力、自旋旋转函数和反应截面在内的散射可观测量。理论预测与实验数据以及从经验光学势得出的结果显示出良好的一致性。我们期望 RBOM 势可以为其他经验性和微观光学势模型提供参考，并且在稀有同位素束的时代为奇异核上的核子散射提供可靠描述。 显示英文摘要

摘要： A relativistic microscopic optical model potential for nucleon-nucleus scattering is developed based on the \emph{ab initio} relativistic Brueckner-Hartree-Fock (RBHF) theory with the improved local density approximation, which is abbreviated as the RBOM potential. Both real and imaginary parts of the single-particle potentials in symmetric and asymmetric nuclear matter at various densities are determined uniquely in the full Dirac space. The density distributions of the target nuclei are calculated by the covariant energy density functional theory with the density functional PC-PK1. The central and spin-orbit terms of the optical potentials are quantitatively consistent with the relativistic phenomenological optical potentials. The performance of the RBOM potential is evaluated by considering proton scattering with incident energy $E\leq 200$ MeV on five target nuclei, $\prescript{208}{}{\text{Pb}}$, $\prescript{120}{}{\text{Sn}}$, $\prescript{90}{}{\text{Zr}}$, $\prescript{48}{}{\text{Ca}}$, and $\prescript{40}{}{\text{Ca}}$. Scattering observables including the elastic scattering angular distributions, analyzing powers, spin rotation functions, and reaction cross sections are analyzed. Theoretical predictions show good agreements with the experimental data and the results derived from phenomenological optical potentials. We anticipate that the RBOM potential can provide reference for other phenomenological and microscopic optical model potentials, as well as reliable descriptions for nucleon scattering on exotic nuclei in the era of rare-isotope beams.