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Waves, gravitation and geometry
Isolated systems, asymptotics and the structures on null-infinity
Isolated systems, asymptotics and the structures on null-infinity
Organizers
Lars Andersson
,
Haiming Du
, Pin Yu
Speaker
Jörg Frauendiener
Time
Wednesday, March 26, 2025 10:30 AM - 12:00 PM
Venue
Jingzhai-105
Online
Zoom 518 868 7656
(BIMSA)
Abstract
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.
This is the second of a series of talks on isolated systems in General Relativity.
This is the second of a series of talks on isolated systems in General Relativity.