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

理解强子物质的起源、结构和相态是理解宇宙演化的关键。为了完全实现这一点，我们需要对原子核的复杂动力学进行建模。建模这种复杂的量子多体系统所固有的计算挑战的规模使得像Blue沃茨这样的千万亿次级资源的利用至关重要。该项目的目标是利用Blue沃茨系统推进光通过中等质量原子核的大规模建模，并首次通过中等质量原子核，包括尚无法进行实验的短寿命同位素，但这些同位素是基础和应用研究中公开问题的突破性解决方案的关键，也是下一代放射性束设施的重点。具体而言，该项目将使用一种创新的方法，即适应性的无核壳模型（SA-NCSM），该模型采用原子核的精确和近似对称性来求解通过现实核力相互作用的粒子系统的非相对论薛定谔方程。所提出的计算将提供前所未有的准确性的核波函数，这对于进一步了解自然界中的基本对称性至关重要，并且对于从中微子物理学所必需的大型数据集中提取信息至关重要，用于探测标准模型之外的物理学，以及天体物理过程的建模。 此外，该项目将培训和教育研究生和博士后研究人员使用大规模计算资源进行核结构建模，以解决物理学和相关领域的重要问题。学生将获得并进一步提高他们在开发高性能计算物理软件方面的技能，为他们在科学和技术领域的职业生涯奠定基础。 此外，该项目还将开放获取软件和数据，包括前所未有的准确性和范围的核结构信息-只有在与“蓝色沃茨”计算能力相结合的情况下才有可能-作为一个公开数据库。

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.