Kaluza-Klein spectra and consistent truncations

Abstract: Kaluza-Klein spectra on string/M-theory solutions depend significantly on whether the solution can be obtained from uplift of a maximal gauged supergravity. For some solutions of M-theory, mIIA and IIB obtained from uplift, I will present the spectrum of KK gravitons and discuss a persistent form of universality when solutions with same (super)symmetry and supergravity spectrum are present in different theories. The masses thus found can be obtained from an SL(8)-covariant mass matrix whose trace provides the universal coefficients.

In the second part of the talk, I will discuss the spectrum of KK gravitons around the N=2 AdS_4 solution that is dual to the IR of a cubic deformation of ABJM. This solution cannot be obtained from uplift of an N=8 D=4theory, and this seems to be linked to the fact that its metric cannot be isometrically embedded in R^8. Further, the allocation of modes with different spins in N=2 supermultiplets cannot be made KK level by KK level, but needs space invaders.

HEP - theory

Audience: researchers in the topic

Exceptional geometry seminar series

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