Collaborative Research: Advancing first-principle symmetry-guided nuclear modeling for studies of nucleosynthesis and fundamental symmetries in nature

了解强子物质的起源、结构和相是理解宇宙演化的关键。为了充分实现这一点，我们需要对原子核的复杂动力学进行建模。对这种复杂的量子多体系统进行建模所固有的计算挑战的规模，使得利用像Blue Waters这样的千万亿级资源变得至关重要。该项目的目标是利用Blue Waters系统推进光通过中等质量原子核的大规模模拟，并首次通过中等质量原子核，包括尚不能进行实验但却是突破性解决基础和应用研究中悬而未决的问题的关键的短寿命同位素，以及下一代放射束设施的焦点。具体地说，该项目将使用一种创新的方法，即对称适应无核壳模型(SA-NCSM)，该模型使用原子核的精确和近似对称性来求解通过真实核力相互作用的粒子系统的非相对论薛定谔方程。拟议的计算将提供前所未有的精度的核波函数，对于进一步了解自然界的基本对称性，以及从大数据集中提取对中微子物理、对探索标准模型之外的物理以及对天体物理过程建模至关重要的信息，都是至关重要的。此外，该项目将利用大规模计算资源对研究生和博士后研究人员进行核结构建模方面的培训和教育，以解决物理和相关领域的重要问题。学生将获得并进一步掌握开发高性能计算物理软件的技能，为他们在科学和技术领域的职业生涯奠定基础。此外，该项目将提供对软件和数据的开放访问，包括具有前所未有的准确性和范围的核结构信息--只有在与Blue Waters的计算能力相结合时才有可能--作为一个公开可用的数据库。

Understanding the origin, structure, and phases of hadronic matter is key to comprehending the evolution of the universe. To fully achieve this, we need to model the complex dynamics of atomic nuclei. The scale of computational challenges that are inherent to modeling such intricate quantum many-body systems makes the utilization of petascale level resources, like Blue Waters, essential. The objective of this project is to use the Blue Waters system to advance large-scale modeling of light through intermediate-mass nuclei and, for the first time, medium-mass nuclei, including short-lived isotopes not yet accessible to experiment but key to breakthrough solutions to open questions in basic and applied research, as well as the focus of next-generation radioactive beam facilities. Specifically, the project will use an innovative approach, the symmetry-adapted no-core shell model (SA-NCSM), which employs exact as well as approximate symmetries of nuclei to solve the nonrelativistic Schrodinger equation for a system of particles interacting via realistic nuclear forces. The proposed calculations will provide nuclear wave functions of unprecedented accuracy that are crucial for gaining further knowledge of fundamental symmetries in nature, as well as on extracting information from large datasets that is essential for neutrino physics, for probing physics beyond the standard model, and modeling of astrophysical processes. In addition, the project will train and educate graduate students and postdoctoral researchers in nuclear structure modeling using large-scale computational resources to address important problems in physics and related fields. The students will acquire and further their skills in the development of high performance computational physics software, laying the foundations for their careers in science and technology. Moreover, the project will provide open access to software and data, including nuclear structure information of unprecedented accuracy and scope -- only possible when coupled with the Blue Waters computational capabilities -- as a publicly available database.