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SUMMARY:inear and non-linear wave equations on Schwarzschild de Sitter - G
 eorge Mavrogiannis (DPMMS)
DTSTART:20220204T130000Z
DTEND:20220204T140000Z
UID:TALK167990@talks.cam.ac.uk
CONTACT:Justin Ripley
DESCRIPTION:We discuss recent developments in the analysis of linear and n
 on-linear wave equations on the Schwarzschild de Sitter spacetime\, which 
 is a black hole spacetime with a positive cosmological constant. Specifica
 lly\, we use only time domain methods\, as opposed to the previous spectra
 l approach\, and give a new proof of exponential decay for the solutions o
 f the linear wave equation and a new proof for the stability of the soluti
 ons of the quasilinear wave equation. Trapped null geodesics will make a f
 requent appearance in this talk.
LOCATION:Zoom
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