Dynamical Symmetry Breaking in Quantum Field Theory

夸克和轻子是由量子时间动力学和电弱理论描述的。虽然量子色动力学的色对称性是完全守恒的，但电弱对称性是自发破缺的。寻找电弱对称性破缺的起源是获得关于夸克和轻子行为统一观点的第一步。电弱理论中的自发对称性破缺是由具有不消失真空期望值的基本希格斯场引发的。为了更深入地理解希格斯机制，人们试图将自发的电弱对称性破缺作为一个没有基本希格斯场的动力学过程来实现。这就是希格斯场的动态电弱对称性破缺。表现为基本费米子的复合场。本课题对基于复合希格斯场的动态电弱对称破缺进行了研究，提出了一些动态电弱对称破缺的模型，并对模型进行了分析。Bardeen和他的合作者对顶部冷凝模型进行了全面的研究。在K. Sasaki， M. Carena， C. Wagner和T. Clark的帮助下，他们成功地推广了模型以适应超对称。J. Kodaira通过与K. Sasaki的合作为这家合资企业做出了部分贡献。复合希格斯模型的一般模型无关性质已经由T. Onogi和他的合作者研究。他们发现了希格斯粒子质量和矢量玻色子质量之间的新关系。作为复合希格斯模型中可能存在的现象之一，T. Nuta及其合作者一直在寻找CP违背的动力学起源。他们在大申旧思想的基础上建立了一个新的CP违背动力学模型，并试图推广该模型来解释现实的CP违背现象。为了展示我们的成果，并与世界各地的理论物理学家进行讨论，我们于1991年11月12日至11月15日在广岛举行了一个关于电弱对称性破缺的国际研讨会。与会人数为135人（国外45人，国内90人），围绕复合希格斯模型进行了约40场演讲。讲习班的会议记录将于1992年6月在世界科学出版社出版。有限公司少

Quarks and leptons are described by quantum chronodynamics and electroweak theory. While the color symmetry of quantum chromodynanics is completely conserved, the electroweak symmetry is spontaneously broken. Searching for an origin of the electroweak symmetry breaking is one of the first steps to gain a unified view on the behavior of quarks and leptons.The spontaneous symmetry breaking in electroweak theory is triggered by elementary Higgs fields with nonvanishing vacuum expectation value. For a deeper understanding of the Higgs mechanism one tries to realize the spontaneous electroweak symmetry breaking as a dynamical process without elementary Higgs fields. This is the dynamical electroweak symmetry breaking in which the Higgs field. appears as a composite field of fundamental fermions.In the present research project the dynamical electroweak symmetry breaking based on the composite Higgs field is investigated and some models of the dynamical electroweak symmetry breaking are propo … More sed and analyzed. The top condensation model has been comprehensively investigated by W. A. Bardeen and his collaborators. They succeeded to generalize the model to accommodate supersymmetry with the assistance of K. Sasaki, M. Carena, C. Wagner and T. Clark. J. Kodaira partly contributed to this joint venture through the collaboration with K. Sasaki. General model-independent properties of the composite Higgs model have been investigated by T. Onogi and his collaborator. They found a new relation between the Higgs mass and the vector boson mass. As one of the possible phenomena in the composite Higgs model, the dynamical origin of the CP violation has been searched for by T. Nuta and his collaborators. They found a new model of the dynamical CP violation based on the Dashen's old idea and are trying to generalize the model to explain the realistic CP violating phenomena.In order to present our accomplishments and to have discussions with theoretical physicists from all over the world we had an international workshop on electroweak symmetry breaking on Nov. 12 through Nov. 15 in 1991 in Hiroshima. The number of participants was 135 (45 from abroad and 90 domestic) and there were about 40 talks on the composite Higgs models. The proceedings of the Workshop will be published in June, 1992 from the World Scientific Pub. Co. Less