Monte Carlo Calculations for Nucleon Systems

核子系统的蒙特卡罗计算

• 批准号: 0456609
• 负责人: Kevin Schmidt
• 金额: --
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0456609&HistoricalAwards=false
• 关键词: Monte; Carlo; Calculations; Nucleon; Systems

This project entails the development and use of methods to calculate the properties of neutron matter, nuclear matter, and atomic nuclei, with applications to both nuclear structure and to astrophysical systems such as neutron stars. The Schroedinger equation is solved in imaginary time using Monte Carlo sampling techniques to deal with the large dimensionality of these quantum mechanical systems. Both space and spin coordinates are sampled to allow the method to be applied to large systems of order 100 particles. Accurate two-body potentials and empirical three-body potentials are used to describe the nuclear forces. Important aspects of this work include the development of techniques to study the pairing transition that leads to superfluidity in neutron matter; the study of the structure of large nuclei; and eventually to be able to treat hot nuclear matter. The project also will support and train a graduate student in nuclear many-body theory.

该项目需要开发和使用计算中子物质、核物质和原子核性质的方法，并将其应用于核结构和天体物理系统，如中子星。利用蒙特卡罗采样技术在虚时间内求解薛定谔方程，以处理这些量子力学系统的大维度。空间和自旋坐标都进行了采样，使该方法能够应用于100阶粒子的大系统。用精确的二体势和经验的三体势来描述核力。这项工作的重要方面包括研究导致中子物质超流动性的配对跃迁的技术发展；大核结构的研究；最终能够处理热核物质。该项目还将支持和培训一名核多体理论的研究生。