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SUMMARY:Instability of supersymmetric microstate geometries - Felicity Epe
 ron
DTSTART:20161007T120000Z
DTEND:20161007T130000Z
UID:TALK67368@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:I will talk about the classical stability of black hole micros
 tate geometries. These have an "evanescent ergosurface": a timelike hypers
 urface of infinite redshift on which there are stably trapped null geodesi
 cs. I will discuss the consequences of such a surface and of stable trappi
 ng of geodesics. This includes a heuristic argument for non-linear stabili
 ty due to these geodesics. Linear perturbations decay particularly slowly 
 in these microstates geometries\, and I will discuss the relation to the s
 tably trapped null geodesics and how this slow decay of linear perturbatio
 ns could be an indication of non-linear instability.
LOCATION:Pavilion B Potter Room (B1.19)
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