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学术预告-The Generalized Abelian and Non-Abelian Gauge Theories and their Particle Physics Applications

作者:  来源:  编辑:姜滔    时间:2018-10-22    浏览:    

讲座主题:The Generalized Abelian and Non-Abelian Gauge  Theories  and their Particle Physics Applications

专家姓名:李田军

工作单位:中国科学院理论物理研究所

讲座时间:2018-10-22 15:00

讲座地点:光电学院1511报告厅

主办单位:烟台大学光电学院

内容摘要:

  Gauge theory is the foundation of the particle  physics Standard Model (SM). Considering the multiple gauge sectors for one  gauge transformation, we study the generalized Abelian and non-Abelian  (Yang-Mills theory) gauge theories. We first point out that the U(1) gauge  theory has a few unique properties, which provide the motivations for the  generalized Yang-Mills theory. Also, we consider the generalized Abelian gauge  theory,  and study the Higgs mechanism with new interesting properties. In  addition, we propose the simple and generic generalizations of Yang-Mills  theory. In the simple generalization, we realize two specific properties in the  Abelian gauge theory. For applications in particle physics, we propose the  invisible axion model with TeV-scale Peceei-Quinn symmetry breaking. We can  solve the strong CP problem, and obtain the effective decay constant around the  intermediate scale. Moreover, we study the SM electroweak symmetry breaking  induced from the symmetry breaking in the other gauge Sector. In particular, we  can easily obtain the strong first order electroweak phase transition in the SM,  which is important for electroweak baryogenesis and gravitational  wave.

主讲人介绍:

李田军,19917月于武汉大学物理系获学士学位。19947月,于中国科学院理论物理研究所获硕士学位。20008月,于威斯康星大学麦迪逊分校物理系获博士学位。20009月至20028月,在宾西法尼亚大学物理天文系做博士后。20029月至20058月,在普林斯顿高等研究院做研究人员。200510月任中国科学院理论物理研究所研究员。发表文章200余篇,引用次数6000余次。曾获得  J. Van Vleck Fellowship, 威斯康星大学麦迪逊分校;普林斯顿高等研究院 Fellowship 等。