Dynamical Symmetry Breaking and Effective Field Theories

在这个项目中，我们促进了强耦合规范理论的微观和宏观方法的研究。特别是1）通过对具有额外维的顶夸克凝聚模型、大味数QCD的手征相变的动力学分析以及在模型构建（小Higgs模型、无Higgs模型等）中的应用，提出了微观的动力学对称破缺。2）有效场论是一种宏观的理论方法，它以隐局域对称性（HLS）为基础，得到了很大的发展。我们在PhysicsReports上发表了一篇233页的综述文章，全面回顾了我们在合肥光源量子效应方面的研究成果，建立了包括矢量介子在内的合肥光源手征微扰理论，进一步发展了我们早先提出的大味数量子色动力学手征相变的矢量表示法。1）和2）与量子色动力学的发展越来越密切，这两个方面的研究成果对我们的工作有着重要的意义。 关于我们 在光锥量子化方面，我们在理解DLCQ的自发破缺对称性和恢复Lorentz不变性方面取得了很大进展（离散光锥。作为本项目的一部分，我们有以下活动：2002年12月在名古屋大学举办“强耦合规范理论和有效场理论（SCGT 02）”国际研讨会。这是一次非常成功的会议，与会者约120人（约40人来自国外），其中包括许多顶级物理学家。(The论文集由世界科学出版公司出版，2004年12月在名古屋大学举办了一个小型国际讲习班“动态对称性破坏（DSB04）”，有50人参加（6人来自国外）。2004年2月，组织了诺贝尔奖获得者特·胡夫特教授的讲座和与他的讨论会。少

In this project we promoted study of strong coupling gauge theories both by microsoopic and macroscopic approaches. In particular,1)Dynamical Symmetry Breaking, a microscopic one, was advanced by the dynamical analyses of the top quark oondensate model with extra dimensions, chiral phase transition of large flavor -number QCD and the application to model buildings (little Higgs, Higgsless models, etc). The phase structure of the strong coupling gauge theories was also revealed.2)Effective Field Theories, a macroscopic approach, developed greatly, based on the Hidden Local Symmetry(HLS). By publishing a review article of 233 pages in Physics Reports which is an overall review of our achievement for the quantum effects of the HLS, we established the HLS chiral perturbation theory including the vector meson and made further development of the Vector Manifestation which we proposed earlier for the chiral phase transition in the large flavor-number QCD.1)and 2)are becoming more intimately c … More onnected by recent development of deconstructed/holographic QCD analysis of the gauge theories with extra dimensions which clarified relevance of HLS in the effective field theory of QCD.As to the light cone quantization we made considerable progress in understanding the spontaneously broken symmetry and recovery of Lorentz invariance of DLCQ (Discrete Light Cone.As parts of the present project, we had the following events :Held an international workshop "Strong Coupling Gauge Theories and Effective Field Theories (SCGT02)" at Nagoya University in December 2002. It was a very successful meeting with attendants about 120 (about 40 from abroad) including many top-ranked physicists. (The proceedings were published by the Worldscientific Publishing Co., ISBN 981-238-437-5).Held a small international workshop "Dynamical Symmetry Breaking (DSB04)" at Nagoya University, with 50 participants (6 from abroad) in December 20004. It was also very successful (Proceedings will be published).Organized lectures by Professor't Hooft, a Nobel laureate, and discussion sessions with him in February 2004. Less