Kaluza-Klein Spectrometry from Exceptional Field Theory

Understand

Exceptional field theories yield duality-covariant formulations of higher-dimensional supergravity.

• They have proven to be an efficient tool for the construction of consistent truncations around various background geometries.
• In this paper, we demonstrate how the formalism can moreover be turned into a powerful tool for computing the Kaluza-Klein mass spectra around these backgrounds.
• Most of these geometries have little to no remaining symmetries and their spectra are accessible to standard methods only in selected subsectors.