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SUMMARY:Waves on Microstate Geometries - Joe Keir
DTSTART:20161125T130000Z
DTEND:20161125T140000Z
UID:TALK69273@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:The "fuzzball proposal" suggests that "microstate geometries" 
 provide a classical\, microscopic description of black holes. However\, re
 cent numerical and heuristic work indicates that they might be classically
  unstable\, and this is now supported by several rigorous results. Overall
 \, these results show that linear waves on microstate geometries behave ve
 ry strangely indeed: despite avoiding the "Friedman instability"\, they de
 cay extremely slowly - even slower than could be achieved by any arrangeme
 nt of mirrors in Minkowski space! Additionally\, the presence of an "evane
 scent ergoregion" can lead to an arbitrarily large amplification of waves\
 , despite the presence of a globally causal Killing vector field. Altogeth
 er\, these results are indicative of a nonlinear instability.
LOCATION:Pavilion B Potter Room (B1.19)
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