Speaker
Description
We consider AdS/CFT in 3 to 6 CFT dimensions with half-maximal SUSY. Such setups feature flavour branes, whose gluon modes we can scatter to probe certain 4-point functions. The analytic bootstrap has successfully fixed several of the corrections to these 4-point functions in a large N expansion; we perform a bulk calculation of the first that is not, which involves the exchange of gravitons. These corrections have a novel feature not present with maximal SUSY: extremal couplings which—contrary to common lore—are perfectly harmless, and induce a mixing between single and double traces. We finally introduce a new way to solve half-maximal superconformal Ward identities in Mellin space, paving the way for new tools for the numerical bootstrap in this context.