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SUMMARY:[Journal Club] Bootstrapping Pions at Large N
DESCRIPTION:Abstract:  For this journal club meeting I will comment on a recent paper by Albert and Rastelli (https://arxiv.org/abs/2203.11950) in which they apply modern S-matrix bootstrap techniques to the old problem of solving QCD in the large N limit. In particular\, they derive universal bounds for the EFT of massless pions and find that the allowed region for large N theories compatible with unitarity\, causality and analiticity of the S-matrix exhibits a sharp kink\, suggesting the possibility that large N QCD might sit on it in a similar way as the 3D Ising model.\nFinally\, I will make some remarks on the similitudes and differences between this case and that of obtaining bounds for the gravitational S-matrix\, and on the difficulties in extending this ideas to the latter. \n 
URL:https://www.lapth.cnrs.fr/event/journal-club-bootstrapping-pions-at-large-n/
CATEGORIES:Upcoming Journal Club
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