Elementary Particle Theory and Quantum Field Theory

基本粒子论和量子场论

• 批准号: 9802551
• 负责人: Rabindra Mohapatra
• 金额: $ 21.5万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2002-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9802551&HistoricalAwards=false
• 关键词: Elementary; Particle; Theory; Quantum; Field

9802551MohapatraThe aim of the proposed research is to explore the role of physics beyond the standard model of particle physics with an emphasis on supersymmetric models, and to explore theoretical and dynamical aspects of supersymmetry. The standard model is the most successful physical theory constructed to date. However, a glaring problem with the standard model is the need for extreme fine tuning of fundamental parameters to explain why observed particles are light compared to much larger mass scales that are believed to play a fundamental role in nature. Supersymmetry provides an elegant framework for solving this problem, and the research in this proposal will study the puzzles of the standard model in this framework. These include the origin of masses, the possibility of neutrino mass, and symmetries whose origin or pattern of violation are not understood. Another area of the proposed research concerns theoretical investigations of supersymmetric models with a view to possible applications in particle physics. Topics include the investigation of strongly coupled models (including dynamical supersymmetry breaking), anomalies in supersymmetric theories, the low-energy effective theory of string theory.

Mohapatra拟议研究的目的是探索超越粒子物理标准模型的物理学的作用，重点是超对称模型，并探索超对称的理论和动力学方面。标准模型是迄今为止构建的最成功的物理理论。然而，标准模型的一个明显问题是，需要对基本参数进行极端微调，以解释为什么观察到的粒子与被认为在自然界中发挥基本作用的大得多的质量尺度相比是轻的。超对称性为解决这一问题提供了一个优雅的框架，本方案中的研究将在这个框架中研究标准模型的困惑。这些包括质量的起源，中微子质量的可能性，以及其起源或破坏模式尚不清楚的对称性。拟议研究的另一个领域涉及超对称模型的理论研究，以期在粒子物理中可能应用。主题包括强耦合模型的研究(包括动力学超对称破缺)、超对称理论中的反常现象、弦理论的低能有效理论。