Iberian Strings Meetings 

21/01/2021, 11:30 — 12:00 — Online
Gabriel Larios, Universidad Autónoma de Madrid

Kaluza-Klein spectra and consistent truncations

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. 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 $N=8 \ D=4$ theory, 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.

See also

Kaluza-Klein spectra and consistent truncations.pdf