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SUMMARY:Amplitude Bootstrap and Double Copy in (Anti) de-Sitter space - Ji
 ajie Mei\, Durham University
DTSTART:20231103T130000Z
DTEND:20231103T140000Z
UID:TALK207979@talks.cam.ac.uk
CONTACT:Xi Tong
DESCRIPTION:We will begin with a brief introduction to the Amplitude Boots
 trap in Minkowski space. Then\, we will use the same idea to bootstrap amp
 litudes in (A)dS space by introducing a new representation of on-shell AdS
  amplitudes in Mellin Momentum space. We will also explain the connection 
 between this amplitude and Cosmological correlators\, which is the main mo
 tivation of this study. Specifically\, we will illustrate how the understa
 nding of pole structure will completely fix the spin-1 exchange amplitude.
  Finally\, we will use the double copy to construct the four-graviton ampl
 itude in AdS_{d+1}.
LOCATION:Potter room/Zoom
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