Flavor from M5-branes

Abstract

We study various aspects of the defect conformal field theory that arises when placing a single M5-brane probe in AdS 4 × S 7. We derive the full set of fluctuation modes and dimensions of the corresponding dual operators. We argue that the latter does not depend on the presence of a non-trivial magnetic flux on the M5-brane world-volume. Finally we give a mass to the hypermultiplet living on the defect, and compute the resulting mesonic spectrum.