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SUMMARY:On Modelling Isolated Systems in General Relativity - Leonhard Keh
 rberger (Cambridge)
DTSTART:20220509T130000Z
DTEND:20220509T140000Z
UID:TALK173765@talks.cam.ac.uk
CONTACT:Dr Greg Taujanskas
DESCRIPTION:We typically aim to describe physical processes by mathematica
 l models that suppose that these processes happen in isolation from the re
 st of the world. In theories such as general relativity\, where spacetime 
 itself is the unknown\, this becomes a highly non-trivial endeavour.\n\nIn
  this talk\, I will first discuss various notions of isolated systems in G
 R and show how they lead to differing predictions on the (in principle mea
 surable) late-time asymptotics of solutions to Einstein's equations.\nI wi
 ll then present a scattering construction of a class of physical spacetime
 s that illustrates how the task of modelling an isolated system can be red
 uced to understanding the behaviour of the system under consideration in t
 he infinite past.\n\n(*no prior knowledge of GR will be assumed*)
LOCATION:CMS\, MR13
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