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SUMMARY:Superradiance in Black Hole Spacetimes - Dominic Dold (CCA)
DTSTART:20150218T160000Z
DTEND:20150218T170000Z
UID:TALK57702@talks.cam.ac.uk
CONTACT:Davide Piazzoli
DESCRIPTION:The study of superradiance in black hole spacetimes has a long
  tradition in the physics literature. A superradiant black hole can radiat
 e “energy” through the horizon\, which possibly causes instabilities. 
 I will give an overview of results about (massive) wave equations in some 
 black hole spacetimes and I will describe how superradiance manifests itse
 lf on the level of these equations. In particular\, I will discuss exponen
 tially growing finite energy solutions to the Klein-Gordon equation. I sha
 ll try to keep this talk on an accessible level\, avoiding technical detai
 ls.
LOCATION:MR14\, Centre for Mathematical Sciences
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