Relativistic Nuclear Few- and Many-Body Problems

相对论核少体和多体问题

• 批准号: 9603097
• 负责人: Ruprecht Machleidt
• 金额: $ 13.46万
• 依托单位: Regents of the University of Idaho
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9603097&HistoricalAwards=false
• 关键词: Relativistic; Nuclear; Few; Many; Body

One of the most fundamental challenges pervading theoretical nuclear physics for half a century is to understand the properties of atomic nuclei in terms of the basic forces between nucleons (protons and neutrons). In spite of the progress made in the past, our present understanding still has many gaps and deficiencies. It is the purpose of this project to substantially advance this field of microscopic nuclear structure. First, we will improve the theory of the basic nuclear force--the interaction between two nucleons. We will develop more quantitative nuclear potentials, which can serve as reliable input for microscopic nuclear structure calculations. Moreover, we will also improve the foundation of the nuclear force model: it must be based upon the fundamental theory of strong interactions, quantum chromodynamics (QCD), and the theory of relativity of Albert Einstein. The second stepping stone in our program is the three nucleon problem which can be solved exactly. The final step in our proposed research is nuclear matter--the stuff that atomic nuclei are made of. A topical issue is the question of how the interaction between two nucleons changes in the nuclear matter environment. This information is important for the theory of nuclear reactions involving heavy nuclei (heavy ion collisions).

半个世纪来，理论核物理学所面临的最基本的挑战之一，就是如何从核子（质子和中子）之间的基本作用力的角度来理解原子核的性质。 尽管过去取得了进展，但我们目前的认识仍有许多差距和不足。 该项目的目的是实质性地推进微观核结构的这一领域。 首先，我们将改进基本核力--两个核子之间相互作用的理论。 我们将开发更多的定量核势，它可以作为微观核结构计算的可靠输入。 此外，我们还将改进核力模型的基础：它必须基于强相互作用的基本理论、量子色动力学（QCD）和爱因斯坦的相对论。 第二步，我们的计划是三个核子问题，可以准确地解决。我们研究的最后一步是核物质--原子核的组成物质。 一个热门的问题是两个核子之间的相互作用如何在核物质环境中变化的问题。 这一信息对于涉及重核的核反应（重离子碰撞）的理论是重要的。