Elementary Particle Theory and Quantum Field Theory

基本粒子论和量子场论

• 批准号: 9421387
• 负责人: Oscar Greenberg
• 金额: $ 39万
• 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: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9421387&HistoricalAwards=false
• 关键词: Elementary; Particle; Theory; Quantum; Field

9421387 Greenberg The Haag expansion (N quantum approximation) will be used to study quantum chromodynamics (QCD), with emphasis on the relation of the constituent quark model to the parton model; i.e., the relation of constituent and current quarks. The goal is to bring quantum field theory methods starting from the QCD Lagrangian to bear on empirical data ranging from hadron spectroscopy to deep inelastic scattering processes. Specfic issues to be investigated include chiral symmetry breaking, confinement, and the description of relativistic bound states. Theoretical investigations will also include studies of (i) radiative and electroweak0induced fine structure effects on the fermion masses in the composite model, (ii) dynamical breaking of supersymmetry, chiral and vectorial symmetries, (iii) Yukawa unification (which is forced in the preon model) and understanding large tan B (iv) expected masses of the SUSY-spectrum in the preon model, (v) the question of the unity of all forces at the preon level, (vi) cosmological issues related to inflation, baryogenesis and dark matter and (vii) a possible origin of the preonic spectrum and gauge group from superstring theories. ***

小行星9421387 Haag展开（N量子近似）将用于研究量子色动力学（QCD），重点是组分夸克模型与部分子模型的关系;即，组分夸克和流夸克的关系。 我们的目标是把量子场论的方法从QCD拉格朗日承担经验数据，从强子光谱深非弹性散射过程。 具体的问题要调查包括手征对称性破缺，禁闭，相对论束缚态的描述。 理论研究还将包括（i）复合模型中费米子质量的辐射和电弱诱导精细结构效应，（ii）超对称性，手征和矢量对称性的动力学破缺，（iii）汤川统一（在前子模型中是强制的）和理解大的tan B（iv）前子模型中SUSY谱的预期质量，（v）在前子水平上所有力的统一性问题，（vi）与暴胀、重子生成和暗物质有关的宇宙学问题，以及（vii）前子谱和规范群从超弦理论的可能起源。 ***