Την Τετάρτη 19 Νοεμβρίου στις 19:00 (παρακαλώ προσέξτε την ασυνήθιστη ώρα) ο Romain Ruzziconi (Harvard University) θα δώσει ένα διαδικτυακό σεμινάριο.

Η ομιλία θα αναμεταδοθεί μέσω Zoom στον ακόλουθο σύνδεσμο:
https://authgr.zoom.us/j/91589590962?pwd=WVyv8au6EVdyQizGrQuwqVyW1btOk9.1

Meeting ID: 915 8959 0962
Passcode: 904962

Ακολουθούν ο τίτλος και η περίληψη της ομιλίας.

Τίτλος: Flat Space/Carrollian Limit of AdS/CFT

Περίληψη: Carrollian holography provides a framework for flat space holography, proposing that gravity in four-dimensional asymptotically flat spacetime is dual to a Carrollian CFT in three dimensions living at null infinity. In this talk, I will present this framework and explain how massless scattering amplitudes in flat space can be re-expressed as Carrollian CFT correlators at the boundary, referred to as Carrollian amplitudes. I will then show that these correlators naturally arise from the Carrollian limit of holographic CFT correlators computed via AdS Witten diagrams, establishing a correspondence between the flat space limit in the bulk and the Carrollian limit at the boundary. This paves the way towards deriving flat space holography from the flat space/Carrollian limit of the AdS/CFT correspondence.