Kaluza-Klein Spectrometry for Supergravity

Understand

Exceptional field theories yield duality covariant formulations of supergravity.

• We show that they provide a highly efficient tool to compute the Kaluza-Klein mass spectra associated to compactifications around various background geometries relevant for string theory and holographic applications.
• This includes geometries with little to no remaining symmetries, hardly accessible to standard methods.
• As an illustration, we work out the masses of some higher Kaluza-Klein multiplets around warped geometries corresponding to some prominent ${\cal N} = 2$ supersymmetric AdS vacua in maximal supergravity.