Nuclear Structure Theory and its Applications to Nuclear Properties, Astrophysics and Fundamental Physics

该项目的研究支持包括核结构理论的一系列主题，以及在新的实验结果、核天体物理学和核中的基本相互作用中的应用。这项研究涉及广泛的科学问题，包括：核稳定的极限是什么？宇宙的化学进化是如何进行的？中微子的质量是多少？核子-核子相互作用下的核性质是如何产生的？将开发、应用核结构理论的计算工具，并向其他用户提供。这些工具与实验数据库集成，用于评估和测试。该项目资助的研究生将有独特的机会培训核理论方面的知名研究，并为之做出贡献。组态相互作用(CI)方法包括核子-核子相互作用的同位旋非收敛部分的哈密顿量将被发展。将用于核天体物理的具体项目包括能级密度、β衰变强度函数和能量密度泛函(EDF)。EDF项目使人们能够将中子皮等核性质与中子星的性质联系起来。许多项目都与稀有同位素束设施(FRIB)的实验计划相协调。这种合作对于最大限度地发挥FRIB设施实验的发现潜力非常重要，该设施将于2022年春季开始。一些计算工具被用于高中和本科生教育的教育项目。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The research support by this project encompasses a range of topics in nuclear structure theory with applications to new experimental results, nuclear astrophysics, and fundamental interactions in nuclei. This research relates to broad questions in science including: What are the limits of nuclear stability? How did the chemical evolution of the universe proceed? What are the masses of the neutrinos? How do the nuclear properties emerge from the underlying nucleon-nucleon interactions? Computational tools for nuclear structure theory will be developed, applied and made available to other users. These tools are integrated with experimental data bases for evaluation and testing. The graduate students supported by this project will have unique opportunities to train and contribute to high-profile research in nuclear theory. Hamiltonians for the configuration-interaction (CI) method that include isospin-nonconverging parts of the nucleon-nucleon interaction will be developed. Specific projects that will be used for nuclear astrophysics include those for level densities, beta decay strength functions, and energy density functionals (EDF). The EDF project enables one to connect nuclear properties such as the neutron skin to properties of neutron stars. Many of the projects are in coordination with the experimental program at the Facility for Rare Isotope Beams (FRIB). This collaboration is important for maximizing the discovery potential of experiments at the FRIB facility that will start in the Spring of 2022. Some of the computational tools are adopted for educational projects that are used for the education for high-school and undergraduate students.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.