Flavor from M5-branes

Understand

We study various aspects of the defect conformal field theory that arises when placing a single M5-brane probe in AdS_4 x 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.