Theoretical Study of Particles and Fields

粒子与场的理论研究

基本信息

批准号：
06045009
负责人：
FUJIKAWA Kazuo
金额：
$ 3.58万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

项目摘要

The major purpose of this project is to understand the basic constituents of the Nature and their properties, together with the basic theoretical framework of particle physics.For this purpose, Fujikawa together with Yamada studied the chiral structure of quarks, in particular, the top quark. On the basis of the experimental data from electron-positron annihilation, it has been shown that the chiral structure of the top quark holds quite accurately. Motivated by this analysis, Fujikawa also studied a model of quarks and leptons and their chiral structure.T.Eguchi together with his collaborators clarified the basic issues related to the dynamics of supersymmetric gauge theories. The conformal properties of supersymmetric Yang-Mills thoeries with or without matters have been clearly analyzed. Also, some of field theoretical properties in 4 as well as 3 and 5 dimensional space-time have been clarified by incorporating the string theoretical view point. He also studied several fundamental issues related to string theory and quantum gravity.T.Yanagida together with his collaborators studied various aspects of super-symmetric extension of the standard model. In particular, he made an analyis related to the issue of the hierarchy problem in the grand unification scheme. He put forward a possible scheme which may eventually solve why the physics at the present energies and the physics at the grand unification scale can be unified in a natural theoretical framework, without inducing large proton decay. He also analyzed the basic issue of supersymmetry breaking mechanism.It should be emphasized that the visitors from CERN provided extremely stimulative information to our theory group.

该项目的主要目的是了解性质及其特性的基本成分，以及粒子物理学的基本理论框架。在此目的中，藤川与山达一起研究了夸克的手性结构，即顶级夸克。根据电子 - 峰值歼灭的实验数据，已经表明，顶部夸克的手性结构非常准确地保持。在这种分析的激励下，藤川还研究了一种夸克和瘦素的模型及其手性结构。已经清楚地分析了有或没有任何物质的超对称阳米尔斯thoeries的共形性。同样，通过合并字符串理论观点点，已经阐明了4个和3维时空中的一些字段理论属性。他还研究了与弦理论和量子重力有关的几个基本问题。特别是，他在大统一计划中与层次结构问题问题进行了分析。他提出了一个可能的方案，该方案最终可以解决为什么在当前能量的物理学和大统一量表的物理学可以在自然理论框架中统一，而不会引起大质子衰变。他还分析了超对称性破坏机制的基本问题。应该强调的是，CERN的访客为我们的理论组提供了极其刺激性的信息。