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SUMMARY:Gravitational instantons old and new - Maciej Dunajski (DAMTP)
DTSTART:20241115T130000Z
DTEND:20241115T140000Z
UID:TALK223558@talks.cam.ac.uk
CONTACT:Daniela Cors
DESCRIPTION:Gravitational instantons are solutions to the four-dimensional
  Einstein equations in Riemannian signature which give complete metrics an
 d asymptotically ‘look-like’ flat space. In late 1970s it was conjectu
 red that the only asymptotically flat gravitational instantons belong to t
 he family of Riemannian Kerr solutions. This conjecture is now known to be
  wrong\, and I shall present a twistor construction of the counterexamples
 :  a two—parameter family of toric Ricci flat metrics found by Chen and
  Teo.
LOCATION:Potter room / https://cam-ac-uk.zoom.us/j/87235967698
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