Topics in Theoretical Physics

理论物理专题

• 批准号: 0243400
• 负责人: Marc Sher
• 金额: $ 6万
• 依托单位: College of William and Mary
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0243400&HistoricalAwards=false
• 关键词: Topics; Theoretical; Physics

The proposed research will focus on the investigation of four topics of very topical and current interest. The first concerns how family symmetry gets broken in grand unified models with family gauge groups. This renewed interest in family symmetries has arisen because they arise naturally in orbifold compactifications in string theory. Possible experimental signatures of flavor changing currents in these models will be investigated. The second project consists of identifying possible Kaluza-Klein states in extra-dimensional models that are candidates for being observed at lepton colliders. The third topic of research will be whether mu-tau conversion can be observed in nuclei. Finally the implication of both CPT and Lorentz violation that are possible in string theory will be investigated in terms of possible atomic physics experiments.

拟议的研究将侧重于调查四个非常热门和当前感兴趣的主题。第一个是关于族对称性如何在具有族规范群的大统一模型中被破缺。人们对族对称性重新产生兴趣，是因为它们在弦理论的轨道紧化中自然出现。可能的实验签名的味道改变电流在这些模型将进行调查。第二个项目包括确定额外维模型中可能的卡鲁扎-克莱因状态，这些状态是在轻子对撞机上观察到的候选状态。研究的第三个主题是是否可以在核中观察到μ-tau转换。最后，CPT和洛伦兹破坏在弦论中可能的含义将在可能的原子物理实验方面进行研究。