Mass spectrum of D=11 supergravity on AdS2×S2×T7 Original Research Article

We compute the Kaluza–Klein mass spectrum of the D=11 supergravity compactified on AdS2×S2×T7 and arrange it into representations of the SU(1,1|2) superconformal algebra. This geometry arises in M theory as the near horizon limit of a D=4 extremal black hole constructed by wrapping four groups of M-branes along the T7. Via AdS/CFT correspondence, our result gives a prediction for the spectrum of the chiral primary operators in the dual conformal quantum mechanics yet to be formulated.