邀请人 (Invited by): 苗荣欣

时间 (Time): 星期五，2023/7/7-16:00-17:00

地点 (Location): 珠海校区天琴中心2316会议室

摘要 (Abstract): 

n this talk, we delve into the fascinating world of scattering amplitudes, exploring their hidden structures and unveiling new physics. We investigate the concept of double copy, establishing intriguing connections between gauge theory and gravitational scattering amplitudes. Leveraging modern computational methods and powerful duality frameworks, we explore the broad applications of the double copy across various regimes, from tree-level to the quantum regime, simplifying the computations of super Yang-Mills theory and supergravity amplitudes. Additionally, we delve into string-like methods and their role in evaluating loop-level amplitudes, revealing the intricate interplay between string theory and field theories. Lastly, we embark on a journey into the realm of generalized biadjoint theories, examining their Feynman diagrams and configuration spaces, thereby paving the way for new theories and offering novel insights.

主讲人简介 (Speaker's CV): 

张勇，2021年10月至今，加拿大圆周物理研究所博士后；2020.10--2021.09，瑞典乌普萨拉大学博士后。2020年6月，于中国科学院理论物理研究所获博士学位。硕士毕业于北京师范大学，本科毕业于四川大学。

研究领域：用世界面或双重拷贝的方法,算树图或圈图(超对称)胶子或引力子振幅,在形式理论或实验方向都有应用。