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SUMMARY:The stability of Minkowski space using the r^p-weighted energy met
 hod - Joe Keir (University of Cambridge)
DTSTART:20190201T130000Z
DTEND:20190201T140000Z
UID:TALK117544@talks.cam.ac.uk
CONTACT:Nathan Johnson-McDaniel
DESCRIPTION:Several proofs of the nonlinear stability of Minkowski space a
 lready exist. These assume various approximate symmetries of the perturbed
  spacetime\, including those generated by boosts and scaling\, so they nee
 d to be heavily modified before we can study the stability of black holes 
 or other objects. What's more\, it is unclear exactly how much these proof
 s rely on the structure of the Einstein vacuum equations - could they be a
 dapted to alternative theories\, or cases involving matter?\n\nIn this tal
 k I will present a new proof\, which avoids assuming many of these approxi
 mate symmetries\, and can also be applied to a very broad class of equatio
 ns. I will also discuss an interesting phenomenon - formation of shock wav
 es at infinity - encountered during this work.
LOCATION:Pavilion B Potter Room (B1.19)
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