协变密度泛函理论的光谱性质
Addressing spectroscopic quality of covariant density functional theory
摘要：
通过分析协变密度泛函理论描述光谱观测量的准确性和理论不确定性，评价了协变密度泛函理论的光谱性质。这种分析首次提出了球形和变形核的单粒子态的能量。它也表明，包括粒子振动耦合改善了描述的能量为主的单粒子状态中，重质量的球形核。然而，理论和实验之间的剩余差异清楚地表明，丢失的物理和协变能量密度泛函中的丢失项。双中子滴线位置预测的不确定性敏感地依赖于单粒子态能量预测的不确定性。另一方面，在基态和有限自旋的大变形核中，许多光谱观测值仅弱依赖于协变能量密度泛函的选择。
英文摘要：
The spectroscopic quality of covariant density functional theory has been accessed by analyzing the accuracy and theoretical uncertainties in the description of spectroscopic observables. Such analysis is first presented for the energies of the single-particle states in spherical and deformed nuclei. It is also shown that the inclusion of particle-vibration coupling improves the description of the energies of predominantly single-particle states in medium and heavy-mass spherical nuclei. However, the remaining differences between theory and experiment clearly indicate missing physics and missing terms in covariant energy density functionals. The uncertainties in the predictions of the position of two-neutron drip line sensitively depend on the uncertainties in the prediction of the energies of the single-particle states. On the other hand, many spectroscopic observables in well deformed nuclei at ground state and finite spin only weakly depend on the choice of covariant energy density functional.
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