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UID:2467@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20260211T133000
DTEND;TZID=Europe/Berlin:20260211T143000
DTSTAMP:20260209T111138Z
URL:https://qft.physik.hu-berlin.de/next-seminars/dogan-akpinar-u-edinburg
 h/
SUMMARY:Dogan Akpinar (U. Edinburgh) - 
DESCRIPTION:Speaker: Dogan Akpinar\n\nTitle: An On-Shell Approach to Symmet
 ries and Integrability for Kerr Black Hole Scattering\n\nAbstract:Recent y
 ears have seen significant progress in computing scattering observables fo
 r spinning black holes at high Post-Minkowskian orders\, using both amplit
 ude-based and worldline-based approaches. In this talk\, we build on these
  developments to explore the integrability properties of Kerr black hole s
 cattering\, both in the probe limit and beyond. We begin by reviewing the 
 radial action and the recently introduced Dirac bracket formalism\, which 
 together allow us to define a notion of asymptotic integrability. Using th
 ese tools\, we show that this integrability persists to higher orders in s
 pin than previously established. Finally\, we present a new perspective on
  spin-shift symmetry—a striking and still not fully understood property 
 of spinning amplitudes—and demonstrate how\, when combined with integrab
 ility constraints\, it enables a powerful bootstrap of the radial action.
CATEGORIES:Pizza Seminars
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
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DTSTART:20251026T020000
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