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SUMMARY:João Penedones (École Polytechnique Fédérale de Lausanne)
DTSTART:20200626T080000Z
DTEND:20200626T090000Z
DTSTAMP:20260423T035715Z
UID:EASW/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/EASW/4/">Non
 perturbative Mellin Amplitudes</a>\nby João Penedones (École Polytechniq
 ue Fédérale de Lausanne) as part of East Asian String Webinars\n\n\nAbst
 ract\nI will argue that nonperturbative CFT correlation functions admit a 
 Mellin amplitude representation. I will discuss the main properties of Mel
 lin amplitudes: subtractions\, analyticity\, unitarity\, Polyakov conditio
 ns and polynomial boundedness at infinity. These can be used to write disp
 ersion relations for Mellin amplitudes. Combining crossing\, dispersion re
 lations and Polyakov conditions I will write down a set of (extremal) func
 tionals that act on the OPE data.\n
LOCATION:https://researchseminars.org/talk/EASW/4/
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