报告题目：Journey Towards Asymptotically Safe Standard Model and Unexploded Higgs: from Large N_f to Large Q

报告人：Dr. Zhi-Wei Wang

报告时间：2021年4月8日（星期四）15：30-16：30

报告地点：在线报告（腾讯会议ID：375 3347 0839）

报告摘要:

Solving QFT is key to a more profound understanding of present and next generation of theories of Nature. In fact, both the large number-of-flavour 1/Nf and charge 1/Q expansion have been useful tools to go beyond Feynman diagrammatic computations. In this talk, I will discuss not only the theoretical perspectives of these two methods but, in particular, also their important applications in particle physics phenomenology. I will show that by using the large number-of-flavour 1/Nf summation techniques, the Standard Model can achieve an interacting ultraviolet fixed point to be asymptotically safe, addressing the famous UV Landau Pole problem. The large charge 1/Q approach may have the potential to address the multi-Higgs production problem. I will show that by implementing the large charge 1/Q approach, we can determine the scaling dimensions of a class of fixed charge operators to the next-to-leading-order in the charge expansion but to all orders in their couplings. 

报告人简介：

Dr. Zhi-Wei Wang obtained his PhD at University of Saskatchewan (2012-2016). After that he held a joint postdoctoral fellowship between University of Waterloo, Perimeter Institute in Canada and CP3-Origins center in Denmark (2016-2019). Since Sep. 2019, he works as a postdoctoral fellow fully based at CP3-Origins center. 

Dr. Zhi-Wei Wang has broad research interests which cover gravitational wave, dark matter model building, origin of electroweak symmetry breaking, addressing hierarchy and naturalness problems for the Higgs mass. Recently, he is particularly interested in exploring the phenomenological aspects of asymptotically safe theories and the conformal field theory with large quantum number (charge). Dr. Zhi-Wei’s research works featuring three publications in the world leading journal Physical Review Letters, and more in high-impact journals Physical Review D and Journal of High Energy Physics.

Dr. Zhi-Wei Wang has also obtained numerous academic awards including the very distinguished Governor General's Academic Gold Medal in 2017 (the highest possible honour bestowed upon students for academic achievement during PhD in Canada presented by the educational institution on behalf of the Governor General).

视频链接：

https://www.bilibili.com/video/BV1uN411f7VZ