Theoretical Physics

理论物理

• 批准号: 9605199
• 负责人: John Kogut
• 金额: $ 40万
• 依托单位: University of Illinois at Urbana-Champaign
• 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: 1997-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9605199&HistoricalAwards=false
• 关键词: Theoretical; Physics

Research in theoretical elementary particle physics will include numerical studies of Quantum Chromodynamics (QCD), Quantum Electrodynamics (QED), and Quantum Gravity. Quantum Chromodynamics is the theory of the strong nuclear force, Quantum Electrodynamics is the theory of the electromagnetic force and Quantum Gravity seeks to explain the gravitational force. The present project will develop a practical simulation method for massless quarks in QCD, an algorithm to simulate QCD in environments rich in protons and neutrons, and will determine whether several conventional field theories, including QED, are consistent. Massless quarks and the generation of dynamical masses are essential ingredients in understanding the properties of nuclei. The physics of environments rich in protons and neutrons underlies nuclear physics and should explain the properties of dense stars. The consistency, or lack thereof, of field theories used to build models of strong, weak, electromagnetic and gravitational interactions will determine the directions of elementary particle physics in the near future.

理论基本粒子物理的研究将包括量子色动力学（QCD）、量子电动力学（QED）和量子引力的数值研究。量子色动力学是强核力的理论，量子电动力学是电磁力的理论，量子引力试图解释引力。本项目将开发一种实用的QCD中无质量夸克的模拟方法，一种在富含质子和中子的环境中模拟QCD的算法，并将确定包括QED在内的几种传统场论是否一致。无质量夸克和动态质量的产生是理解原子核性质的重要组成部分。富含质子和中子的环境的物理学是核物理的基础，应该可以解释致密恒星的特性。用于建立强、弱、电磁和引力相互作用模型的场论的一致性或缺乏一致性将决定不久的将来基本粒子物理学的方向。