Arjun Bagchi (IIT Kanpur & Ecole Polytechnique), u, I and Carroll
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Europe/Stockholm
Albano 3: 6228 - Mega (22 seats) (Albano Building 3)
Albano 3: 6228 - Mega (22 seats)
Albano Building 3
22
Description
I will elaborate why it is essential to keep track of the null direction $u$ at null infinity $\mathscr{I}^\pm$ when constructing holography for asymptotically flat spacetimes and hence the Carrollian co-dimension one picture of this hologram is more "natural" than the Celestial one, which is co-dimension two. I will show how the Carroll picture and specifically Carrollian CFT correlations arise naturally from AdS_4/CFT_3 by looking at Witten diagrams in the flat space limit.
