报告题目：Building up quantum spacetimes with BCFT Legos

报告人：孔令欣 教授 （清华大学）

报告时间：2025年4月11日（周五）上午10:30-11:30

报告地点：北洋园校区49教410室

报告摘要：

Is it possible to read off the quantum gravity dual of a CFT directly from its operator algebra? In this essay, we present a step-by-step recipe synthesizing results and techniques from conformal bootstrap, topological symmetries, tensor networks, a novel symmetry-preserving real-space renormalization algorithm devised originally in lattice models, and the asymptotics of quantum 6j symbols, thereby providing an answer in the affirmative. Quantum 2D Liouville theory serves as a simple and explicit example, illustrating how the quantum gravitational path integral can be built up from local pieces of BCFT correlation functions, which we call the ``BCFT Legos''. The constructive map between gravity and CFT naturally and explicitly bridges local geometrical data, algebraic structures, and quantum entanglement, as envisaged by the ItfromQubit motto.

报告人简介：

孔令欣本科就读于牛津，硕博就读于剑桥，曾在加拿大圆周理论物理研究所和哈佛大学物理系做博士后，回国后任复旦大学物理系长聘教授，2022年秋天加入丘成桐数学科学中心。主要研究领域为规范场论/引力场论对应（AdS/CFT Correspondence）及其在量子纠缠及量子信息学的应用。先后发表论文70余篇，2015年获“求是杰出青年学者奖”。