时间：2025年11月13日（星期四）下午14:00-15:30
地点：西湖大学云谷校区E10-212
主持人：理论科学研究院 刘洪光
主讲人：Song He, Ningbo University
主讲人简介：Song He is a Professor at the Institute for Fundamental Physics and Quantum Technology, Ningbo University. He received his Ph.D. in 2011 from the Institute of High Energy Physics, Chinese Academy of Sciences, and subsequently held postdoctoral positions at the Institute of Theoretical Physics (CAS), the Yukawa Institute for Theoretical Physics at Kyoto University, and the Max Planck Institute for Gravitational Physics (Albert Einstein Institute). In 2019 he joined the Faculty of Physics at Jilin University as a professor. His research spans gravitational theory, quantum field theory, string theory, and mathematical physics. His current interests focus on uncovering the nature of gravity through dualities between strings and fields, and on using gauge/gravity duality to study nonperturbative phenomena in quantum field theory.
报告题目：To understand the nature of gravity from strings and fields
报告摘要：This colloquium introduces the AdS/CFT correspondence—the idea that a quantum theory with gravity in anti–de Sitter (AdS) space can be exactly equivalent to a conformal field theory (CFT) without gravity on its boundary—starting from basic symmetry principles and field content. I will briefly survey recent progress in AdS/CFT, then present nontrivial checks—indeed a form of "proof" in specific sectors—of AdS3/CFT2 based on my own work. Building on this framework, I will highlight two applications of gravity's holographic nature. First, I will review the status of holographic entanglement entropy and what it teaches us about quantum spacetime. Second, I will show how AdS/CFT offers controlled, nonperturbative insight into strongly coupled systems, with a focus on lessons relevant to quantum chromodynamics. I will conclude by outlining a new, holography-independent approach to the nature of gravity and discuss how it complements, and potentially challenges, the holographic perspective.
