Strong Interactions and Hadron Physics

1. 本研究的主要目的是在量子色动力学的基础上，阐明手性对称相转化为自发破缺相的机制，以及强子在非微扰区域的色约束构造，从而得到与微扰区域实验结果一致的结果。在此基础上，根据晶格规范理论、阿贝尔投影和逆方法，提出了几种处理非摄动效应等问题的新方法，并应用于研究相变、约束等机理。将量子cd与非线性sigma模型联系起来的研究被认为是量子cd的低能量有效理论。在非线性sigma模型的孤子解skyrmion和手性袋模型中，研究了重子的性质及其相互作用。基于点阵规范理论，利用计算机对QCD体系的相结构、强子的质谱和雷格轨迹斜率等进行了直接研究。由于新的计算方法和计算机的迅速发展，最近的结果是非常可信的，以至于不得不对以前的结果再看一遍。统一包括QCD在内的相互作用和克服所谓标准模型的尝试一直在积极进行。结合在10OGeV附近及以上得到新结果的实验情况，计算了CP违和和顶夸克质量的理论预测。对于早期宇宙的形成，用有限温度量子光盘研究了夸克-胶子等离子体和高密度物质。

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.