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The Origin of Mass and Particle Unified Model.

质量与粒子统一模型的起源。

基本信息

批准号：
08640365
负责人：
YAMAWAKI Koichi
金额：
$ 1.41万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640365/
关键词：
Dynamical Symmetry Breaking Composite Higgs Strong Coupling Gauge Theory Nonperturbative Solution Four-Fermion Theory Top Quark Condensate Light-Front (Light-Cone) Quantization Zero Mode カイラル対称性トップクォーク擬縮電弱対称性

项目摘要

One of the most urgent problems in particle physics is the origin of mass. The present research project aimed at revealing the origin of mass based on the composite Higgs model, or the dynmamical symmetry breaking of the chiral symmetry. The main issue of us was to construct a unified model based on the strongly coupled gauge theories as well as to investigate a new class of field theories with nontrivial phase structure.The top quark condensate we proposed long ago would be the starting point for such a purpose. We studied a possibility to reduce the original prediction of the top quark mass in this model which turned out somewhat larger than the experimental result. Based on the renormalizability argument of the gauge four-fermion theory ("gauged Nambu-Jona-Lasinio (NJL) model) , we showed that in the framework of GUT the cutoff can be taken to infinity so as to reduce the top mass prediction of the top quark condensate ("Top-mode GUT").Recently much has been known about the phase st … More ructure of the supersymmetric strongly coupled gauge theories. In this connection we studied phase structure of non-supersymmetric gauge theories, particularly QCD with large number of flavors which is expected to have an infrared fixed point. This we studied in terms of a new concept of "conformal phase transition" which we developed through analysis of the peculiar phase transition of the gauged NJL model.As a nonperturbative approach to the strongly coupled system, we also studied light-cone quantization : we further developed the Discrete Light-Cone Quantization. (DLCQ) which was first introduced by Maskawa-Yamawaki and has been frequently discussed for solving QCD and recently studied also in the Matrix model for the M-theory/superstring. We further developed our previous work on the spontaneous symmetry breaking in this framework, and pointed out some difficulty with the continuous framework in contrast to DLCQ.In connection with the present project, we organized a Monbusho-sponsored international workshop "Perspectives of Strong Coupling Gauge Theories" at Nagoya during November 13-16, 1996 which accommodated 115 participants (42 from oversea). Less

粒子物理学中最紧迫的问题之一是质量的起源。本研究旨在揭示基于复合Higgs模型的质量起源，即手征对称的动力学对称破缺。我们的主要任务是在强耦合规范场理论的基础上建立统一的模型，同时研究一类新的具有非平凡相结构的场论，而我们很早以前提出的顶夸克凝聚就是这一目标的出发点。我们研究了一种可能性，以减少原来的预测的顶夸克的质量在这个模型中，结果比实验结果稍大。基于规范四费米子理论（规范Nambu-Jona-Lasinio（NJL）模型）的可重整性论证，我们证明了在大统一理论框架下，截断可以取到无穷远，从而降低了顶夸克凝聚的顶模质量预言（“顶模大统一理论”）。最近，人们对顶夸克凝聚的相态性质有了更多的了解，并对顶夸克凝聚的顶模质量预言进行了讨论 ...更多信息超对称强耦合规范理论的结构在这方面，我们研究了非超对称规范理论的相结构，特别是具有大量味道的QCD，它被期望具有红外不动点。我们通过对规范NJL模型特殊相变的分析，提出了“共形相变”的新概念，作为强耦合系统的非微扰方法，我们还研究了光锥量子化：进一步发展了离散光锥量子化。（DLCQ）是由Maskawa-Yamawaki首先提出的，并且经常被讨论用于求解QCD，最近也在M理论/超弦的矩阵模型中进行了研究。我们进一步发展了我们以前在这个框架下关于自发对称破缺的工作，并指出了与DLCQ相比连续框架的一些困难。与本项目有关，我们于1996年11月13-16日在名古屋组织了一个由Monbuso主办的国际研讨会“强耦合规范理论的前景”，有115名与会者（42名来自海外）。少