【01.05】Seminar：Selection rules without group actions in particle physics
Seminar
报告题目：Selection rules without group actions in particle physics
报告人：徐凌霄, 博士后，Abdus Salam International Centre for Theoretical Physics (ICTP) in Trieste, Italy
主持人：岩斌，副研究员，中国科学院高能物理研究所
报告时间：2026年1月5日（周一），下午15:00
报告地点：高能所图书馆楼319
报告摘要：
Motivated by recent advances in various generalizations of global symmetries in quantum field theory, we introduce a class of selection rules originating from non-invertible fusion algebras rather than conventional group laws, which we refer to as non-invertible selection rules (NISRs). We discuss some applications in simple particle physics models, demonstrating that NISRs are far from exotic and can potentially have broad applications in addressing open questions beyond the Standard Model. We further illustrate their implications in perturbation theory through the spurion analysis and connect to aspects of effective theories and 't Hooft naturalness. This talk is based on 2503.19964, 2508.14970, 2510.18972.
个人简介：
Ling-Xiao Xu (徐凌霄) is currently a postdoc working at the Abdus Salam International Centre for Theoretical Physics (ICTP) in Trieste, Italy. Before that, he was a postdoc at the University of Padova and INFN Padova section, following a Ph.D. degree from Peking University in 2021. His research focuses on particle physics beyond the Standard Model, and more recently, implications of (generalized) symmetries and anomalies in quantum field theory.
附件下载：
