CAREER: Few-Body Physics in Finite Volume

职业：有限体积中的少体物理学

• 批准号: 2044632
• 负责人: Sebastian König
• 金额: $ 42.5万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-15 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2044632&HistoricalAwards=false
• 关键词: CAREER; Few; Body; Physics; Finite

Understanding how subatomic matter organizes itself and gives rise to both our own existence as well as to phenomena observed in the universe is a central goal of nuclear science that is relevant across many areas of physics. With this project, the PI and his collaborators will develop novel theoretical techniques and numerical simulations of quantum systems that will help understand how they are governed by the underlying fundamental forces. This will in particular address exotic corners in the landscape of atomic nuclei, where an effective cluster structure emerges out of the interaction of many constituents. The new methods will be based on the fascinating observation that real-world properties of a physical system can be inferred from studying how it changes with the size of a finite geometry that it is simulated in. They will be relevant not only for nuclear physics, but also for other areas which exhibit very similar structures. The project will support and train both graduate and undergraduate students, and together with the "Computational Modeling in Physics First with Bootstrap" program it will furthermore enhance high-school physics education. This collaboration will broaden participation in STEM topics through activities that integrate physics and programming skills.The project will strengthen the connection of nuclear physics to Quantum Chromodynamics (QCD), the fundamental theory of the strong interaction. It will achieve this by studying the connection of different nuclear effective field theories (EFTs), exploiting their overlapping regimes of applicability to leverage predictive power towards exotic rare isotopes with few-body halo or cluster structure. It will furthermore address important questions in the construction of nuclear EFTs by analyzing how precise and accurate nuclear spectra emerge out of systematic expansions of the nuclear force. Finally, it will study nuclear continuum observables (resonances and response functions), covering the richness of nuclear phenomena and addressing the interplay of nuclear states with electromagnetic probes that are used to gather experimental information about nuclei. Finite-volume techniques enable the treatment of all of these aspects in an elegant and unified way, and they furthermore render insights from the project relevant for lattice simulations of QCD or cold atomic systems.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.

了解亚原子物质是如何组织自己的，并引起我们自己的存在以及在宇宙中观察到的现象是核科学的核心目标，在许多物理学领域都相关。 通过这个项目，PI及其合作者将开发新颖的理论技术和量子系统的数值模拟，这些技术将有助于了解它们如何受到基本基本力量的支配。 在原子核的景观中，这特别是解决异国情调的角落，在许多成分的相互作用中出现了有效的簇结构。 新方法将基于以下令人着迷的观察结果，即可以通过研究它如何随着其模拟的有限几何形状的大小而变化来推断出物理系统的实际特性。它们不仅与核物理学有关，而且与表现出非常相似结构的其他领域相关。 该项目将支持和培训研究生和本科生，并将与“首先使用Bootstrap的计算建模”计划一起，并增强高中物理教育。 这种合作将通过整合物理学和编程技能的活动来扩大对STEM主题的参与。该项目将加强核物理与量子染色体动力学（QCD）的联系，量子染色体动力学（QCD）是强烈相互作用的基本理论。 它将通过研究不同的核有效场理论（EFT）的联系来实现这一目标，从而利用其重叠的适用性制度来利用对具有很少体现晕或聚类结构的异国情调稀有同位素的预测能力。 通过分析核力量系统扩张的精确和准确的核谱，它将通过分析核EFT的构建中的重要问题。 最后，它将研究核连续体可观察物（共振和响应函数），涵盖核现象的丰富性，并解决核态与电磁探针的相互作用，这些探针用于收集有关核的实验信息。 有限数量的技术可以以优雅而统一的方式对所有这些方面进行处理，并从与QCD或冷原子系统的晶格模拟相关的项目中提供了见解。该奖项反映了NSF的法规使命，并认为通过基金会的知识优点和广泛的criTia crietia crietia crietia crietia criteria crietia crietia crietia crietia crietia crietia cristia crietia crietia cristia crietia cristia cristia cristia cristia cristia cristia cristia cristia均值得一提。

项目成果

Volume extrapolation via eigenvector continuation

通过特征向量延拓进行体积外推

• DOI: 10.1103/physrevc.106.014309
• 发表时间: 2022
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Yapa, Nuwan;König, Sebastian
• 通讯作者: König, Sebastian

Three-body resonances in pionless effective field theory

• DOI: 10.1103/physrevc.105.064002
• 发表时间: 2021-09
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: S. Dietz;H. Hammer;S. Konig;A. Schwenk

Perspectives on Few-Body Cluster Structures in Exotic Nuclei

• DOI: 10.1007/s00601-023-01794-0
• 发表时间: 2022-11
• 期刊: Few-Body Systems
• 影响因子: 1.6
• 作者: D. Bazin;K. Becker;F. Bonaiti;C. Elster;K. Fossez;T. Frederico;A. Gnech;C. Hebborn;Michael D. Higgins;L. Hlophe;Bill Kay;S. König;K. Kravvaris;J. Lubian;A. Macchiavelli;F. Nunes;L. Platter;G. Potel;Xilin Zhang

Efficient few-body calculations in finite volume

有限体积内的高效少体计算

• DOI: 10.1088/1742-6596/2453/1/012025
• 发表时间: 2023
• 期刊: Journal of Physics: Conference Series
• 作者: König, S