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Isolated systems, asymptotics and the structures on null-infinity

组织者

拉尔斯•安德森

演讲者

Jörg Frauendiener

时间

2025年03月12日 10:15 至 12:00

地点

Jingzhai-105

线上

Zoom 518 868 7656 (BIMSA)

摘要

The idea of an isolated system is fundamental in physics, particularly in GR. Mathematically, it is realised as an asymptotically flat space-time. Penrose's geometric insights allow us to conformally compactify such a space-time by introducing a conformal boundary called null-infinity. It is a null hypersurface which inherits many properties of Minkowski space and on which the non-linear fields of the space-time leave many interesting "imprints”. In this series of talks, I will discuss the foundations of null-infinity, introduce the structures thereon and point to open problems.