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Physics Seminar | Zhao-Kun Yang 杨兆昆: Studying Fermion-Boson strong coupling system by using non-perturbative quantum field theoretic methods
时间
2023年3月22日（周三）
16:00-17:30
地点
爱游戏体育在线登录云谷校区E10-212教室
主持
爱游戏体育在线登录理学院讲席教授 吴从军
受众
全体师生
分类
学术与研究
Physics Seminar | Zhao-Kun Yang 杨兆昆: Studying Fermion-Boson strong coupling system by using non-perturbative quantum field theoretic methods
时间：2023年3月22日（周三）下午 16:00-17:30
Time：16:00-17:30, Wednesday, March 22nd, 2023
主持人:?爱游戏体育在线登录理学院讲席教授?吴从军
Host:?Prof.?Congjun?Wu, Chair?Professor?of School of Science, Westlake University
Venue:?E10-212, Yungu Campus, Westlake University
杨兆昆
中国科学技术大学
Zhao-Kun?Yang
University of Science and Technology of China
主讲人/Biography:
Dr. Yang Zhaokun received his bachelor's degree from the University of Science and Technology of China in 2016 and his doctoral degree from the University of Science and Technology of China in 2023. He mainly studies non-perturbative field theory methods in condensed matter systems, especially in strongly correlated systems and quantum critical behavior.
讲座摘要/Abstract:
Accurate understanding of strongly correlated electron systems is crucial for explaining important phenomena such as high-temperature superconductivity, non Fermi liquid and quantum phase transitions. Many traditional perturbative methods are no longer reasonable in strongly correlated systems. We have developed a non-perturbative method to simplify the Dyson-Schwinger equation by constructing sufficient Ward identities through symmetry. The characteristic of this method is that it does not contain any approximations and can strictly handle strongly correlated systems. We consider the electron phonon superconductivity model and graphene, respectively, and give more accurate results than traditional methods.
讲座联系人/Contact:
理学院，张悦，邮箱：zhangyue62@westlake.edu.cn
School of Science, Yue?Zhang, Email: zhangyue62@westlake.edu.cn
