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TZID:Europe/Berlin
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UID:2179@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20241125T133000
DTEND;TZID=Europe/Berlin:20241125T143000
DTSTAMP:20241121T130304Z
URL:https://qft.physik.hu-berlin.de/next-seminars/oliver-long/
SUMMARY:Oliver Long: Black hole scattering in the strong-field regime: Merg
 ing post-Minkowskian theory with numerical methods - 
DESCRIPTION:WQFT group seminar.\n\nSpeaker: Oliver Long\n\nTitle: Black hol
 e scattering in the strong-field regime: Merging post-Minkowskian theory w
 ith numerical methods\n\nAbstract: Recent advances in modelling unbound bi
 nary black hole interactions have been driven by the application of scatte
 ring amplitude methods to generate results within the post-Minkowskian (PM
 ) expansion. However\, this expansion breaks down when approaching the str
 ong-field where the large curvature effects become non-negligible. In this
  talk\, I will show how numerical information from self-force (SF)\, an ex
 pansion in the small mass ratio of the system\, can inform higher-order co
 efficients in the PM expansion. I will also show how a single point of SF 
 scattering data can be used to resum the PM series\, providing accurate pr
 edictions for scattering angles across all separations. Additionally\, I w
 ill present results from unbound numerical relativity simulations\, where 
 the full Einstein field equations are solved for comparable mass systems\,
  and compare these with predictions from PM-informed effective one body mo
 dels.
CATEGORIES:ERC Group Seminar
LOCATION:Room 1.221\, IRIS building\, Zum großen Windkanal 6\, Berlin\, 12
 489\, Germany
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Zum großen Windkanal 6\, B
 erlin\, 12489\, Germany;X-APPLE-RADIUS=100;X-TITLE=Room 1.221\, IRIS build
 ing:geo:0,0
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DTSTART:20241027T020000
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