Strong Interactions and Hadron Physics

强相互作用和强子物理

基本信息

批准号：
63302010
负责人：
SAWADA Shoji
金额：
$ 7.36万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

1. The main purpose of this research project was to clarify the mechanisms how transfer the chiral symmetric phase into spontaneously broken phase and how hadrons are constructed with color confinement in the non-perturbative regions on the basis of QCD(Quantum Chromodynamics) which leads to results coincide with the experiments in the perturbative regions.2. Along this line in terms of the lattice gauge theory, Abelian projection and inverse method several new methods which can treat the problems including the non-perturbative effects are developed and applied to investigate mechanism of the phase transition, confinement, etc.3. Several efforts have been done to relate QCD to the non-linear sigma model which are considered as the low energy effective theory of QCD. In terms of skyrmion which is the soliton solution of the non-linear sigma model the properties of baryons and their interactions are studied as well as in terms of the chiral bag model.4. Based on the lattice gauge theory and by use of computer the direct study of the phase structure of QCD system, mass spectra of hadrons and the slope of the Regge trajectories, etc. has been continued. Due to the new method of calculation and rapid progress of computer machine the recent results are highly plausible so that the earlier results have to be required another look.5. The attempts to unify the interactions including QCD and to over come so called the standard model have been actively carried. In connection with the experimental situations where new results around and above 10OGeV have been obtained, the theoretical predictions on the CP violation and top quark mass are calculated. Regarding to the creation of early universe the quark-gluon plasma and high density matter are studied by the finite temperature QCD.

1。该研究项目的主要目的是阐明如何将手性对称相转化为自发损坏的相位以及如何根据QCD（量子染色体动力学）在非扰动区域中使用颜色限制来构建的哈德子。结果与扰动区域中的实验相吻合2。沿着这条线，就晶格量规理论，阿贝尔投影和反向方法而言，几种新方法可以处理问题，包括非扰动效应，并应用于研究相变，限制等机制。3。已经做出了几项努力，将QCD与非线性Sigma模型相关联，该模型被认为是QCD的低能量有效理论。在Skyrmion方面，这是非线性Sigma模型的孤子解决方案，对Baryons及其相互作用的性质以及手性袋模型进行了研究。4。基于晶格仪理论和计算机的使用直接研究QCD系统的相结构，HADRON的质谱和雷格轨迹的斜率等。由于新的计算方法和计算机机器快速进度的方法，最近的结果是高度合理的，因此必须需要较早的结果。5。统一包括QCD（包括QCD）和所谓的标准模型的相互作用的尝试已积极进行。在获得了10OGEV周围和以上的新结果的实验情况下，计算了CP违规和顶级夸克质量的理论预测。关于早期宇宙的创建，有限温度QCD研究了夸克 - 杜伦等离子体和高密度物质。