论文标题
使用有效手性核子核子相互作用探索中质核
Exploring medium mass nuclei using effective chiral nucleon-nucleon interactions
论文作者
论文摘要
在过去的几十年中，已经表明，三体力对于对核多体系统的完全微观理解是必要的，因此已经开发了有效的存储和利用三体矩阵元素的方案。但是，三体矩阵元素仍然需要大量的内存和/或存储，并且很容易超出最先进的超级计算机的限制。我们探讨了模仿中等质量区域（尤其是较低$ pf $ shell）的三体力的可能性，依赖密度依赖性有效的核子核子相互作用与现代手性核子核子相互作用和对耦合常数的不确定性量化结合在一起。我们发现，一些有效的核子核电电位给出了对基态能量的体面描述，但也有系统地低估与$ PF $ -SHELL区域相关的电荷半径和缺陷。
In the past decades, it has been shown that the three-body force is necessary for a fully microscopic understanding of nuclear many-body systems, and thus efficient schemes for storing and utilizing three-body matrix elements have been developed. However, three-body matrix elements still demand a lot of memory and/or storage and it readily exceeds the limitation of the state-of-the-art supercomputers. We explore the possibility of mimicking the effects of three-body forces in medium-mass region, especially lower $pf$ shell, by density-dependent effective nucleon-nucleon interactions combining with a modern family of chiral nucleon-nucleon interaction and an uncertainty quantification on the coupling constants. We found that some effective nucleon-nucleon potentials give decent description of ground state energies, but also systematic underestimation in charge radii and deficiencies relevant to the $pf$-shell region.
