On AdS$_{7}$ stability - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2020

On AdS$_{7}$ stability

Fabio Apruzzi
  • Fonction : Auteur
G. Bruno de Luca
  • Fonction : Auteur
Alessandra Gnecchi
  • Fonction : Auteur
Alessandro Tomasiello
  • Fonction : Auteur

Résumé

AdS7 supersymmetric solutions in type IIA have been classified, and they are infinitely many. Moreover, every such solution has a non-supersymmetric sister. In this pa- per, we study the perturbative and non-perturbative stability of these non-supersymmetric solutions, focusing on cases without orientifolds. Perturbatively, we first look at the KK spectrum of spin-2 excitations. This does not exhibit instabilities, but it does show that there is no separation of scales for either the BPS and the non-BPS case, thus proving for supersymmetric AdS7 a well-known recent conjecture. We then use 7d gauged supergravity and a brane polarization computation to access part of the spectrum of KK scalars. The result signals an instability for all non-supersymmetric solutions except those that have a single D8 on each side. We finally look at non-perturbative instabilities, and find that NS5 bubbles make these remaining solutions decay.

Dates et versions

hal-02447868 , version 1 (21-01-2020)

Identifiants

Citer

Fabio Apruzzi, G. Bruno de Luca, Alessandra Gnecchi, Gabriele Lo Monaco, Alessandro Tomasiello. On AdS$_{7}$ stability. Journal of High Energy Physics, 2020, 07, pp.033. ⟨10.1007/JHEP07(2020)033⟩. ⟨hal-02447868⟩
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