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The University of Southampton
STAG Research Centre

String Theory seminar - Prateksh Dhivakar Seminar

Time:
13:00
Date:
4 October 2023
Venue:
Building 54, Room 7035

For more information regarding this seminar, please email David Turton at [email protected] .

Event details

Title: AdS Witten diagrams to Carrollian correlators

Abstract: Carrollian Conformal Field Theories (CFTs) have been proposed as co-dimension one holographic duals to asymptotically flat spacetimes as opposed to Celestial CFTs which are co-dimension two. In this talk, we start with a brief introduction to this approach to flat space holography. Afterwards, drawing inspiration from Celestial holography, we show by a suitable generalisation of the flat space limit of AdS that keeps track of the previously disregarded null direction, one can reproduce Carrollian CFT correlation functions from AdS Witten diagrams. In particular, considering Witten diagrams in AdS$_4$, we reproduce two and three-point correlation functions for three dimensional Carrollian CFTs in the so-called delta-function branch. We also obtain a generalised anti-podal matching condition that now depends on the retarded time direction. This establishes a direct link between AdS holography and flat holography. Based on arXiv:2303.07388 [hep-th].

Speaker information

Prateksh Dhivakar , IIT Kanpur.

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