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Volume-distance-ratio asymptote, spacetime inextendibility and strong cosmic censorship

组织者

Gaoming Wang , 赵博文

演讲者

乐鹏宇

时间

2025年11月06日 10:00 至 11:30

地点

Tsinghua-Jingzhai-105

线上

Zoom 230 432 7880 (BIMSA)

摘要

A fundamental problem in spacetime singularity theory concerns the manner in which spacetime terminates at the singularity. This problem is closely connected with the strong cosmic censorship conjecture in general relativity. We introduce the spacetime inextendibility criteria in low regularities via the volume-distance-ratio asymptote of the timelike diamond approaching the future boundary point. We employ the criteria to prove the inextendibilities of the celebrated spherically symmetric naked singularity spacetime constructed by Christodoulou, and certain spatially flat or hyperbolic FLRW spacetime.

演讲者介绍

乐鹏宇博士毕业于苏黎世联邦理工学院，后在美国密西根大学从事博士后研究，2021年9月入职北京雁栖湖应用数学研究院，担任助理研究员，致力于微分几何和与广义相对论相关的基础数学研究。