BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Analytic structure of cosmological correlators - Pierre Vanhove (C
 EA/Saclay)
DTSTART:20220825T101500Z
DTEND:20220825T111500Z
UID:TALK177242@talks.cam.ac.uk
DESCRIPTION:We give the analytic structure of late-time cosmological corre
 lations functions in rigid de Sitter space time of conformally coupled sca
 lars. We show that the evaluation of the Witten diagrams can be reintepret
 ed as flat-space Feynman integrals. This simplifies drastically the pertur
 bative computations\, and allow to analytical evaluations of the correlato
 r in perturbation. From these analytical evaluations\, we extract loop cor
 rections to the anomalous dimensions\, and get some insights into the anal
 ytic structure of conformal correlators in rigid AdS and dS.
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR