We consider compactifications of massive IIA supergravity on a six-sphere. This setup is known to give rise to non-supersymmetric AdS4 vacua preserving SO(7) as well as G2 residual symmetry. Both solutions have a round S 6 metric and are supported by the Romans’ mass and internal F6 flux. While the SO(7) invariant vacuum is known to be perturbatively unstable, the G2 invariant one has been found to have a fully stable Kaluza-Klein spectrum. Moreover, it has been shown to be protected against brane-jet instabilities. Motivated by these results, we study possible bubbling solutions connected to the G2 vacuum, representing non-perturbative instabilities of the latter. We indeed find an instability channel represented by the nucleation of a bubble of nothing dressed up with a homogeneous D2 brane charge distribution in the internal space. Our solu tion generalizes to the case where S 6 is replaced by any six-dimensional nearly-Kähler manifold.

Bomans, P., Cassani, D., Dibitetto, G., Petri, N. (2022). Bubble instability of mIIA on AdS4 × S6. SCIPOST PHYSICS, 12(3) [10.21468/SciPostPhys.12.3.099].

Bubble instability of mIIA on AdS4 × S6

Davide Cassani;Giuseppe Dibitetto;
2022-01-01

Abstract

We consider compactifications of massive IIA supergravity on a six-sphere. This setup is known to give rise to non-supersymmetric AdS4 vacua preserving SO(7) as well as G2 residual symmetry. Both solutions have a round S 6 metric and are supported by the Romans’ mass and internal F6 flux. While the SO(7) invariant vacuum is known to be perturbatively unstable, the G2 invariant one has been found to have a fully stable Kaluza-Klein spectrum. Moreover, it has been shown to be protected against brane-jet instabilities. Motivated by these results, we study possible bubbling solutions connected to the G2 vacuum, representing non-perturbative instabilities of the latter. We indeed find an instability channel represented by the nucleation of a bubble of nothing dressed up with a homogeneous D2 brane charge distribution in the internal space. Our solu tion generalizes to the case where S 6 is replaced by any six-dimensional nearly-Kähler manifold.
2022
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/02
English
Con Impact Factor ISI
Bomans, P., Cassani, D., Dibitetto, G., Petri, N. (2022). Bubble instability of mIIA on AdS4 × S6. SCIPOST PHYSICS, 12(3) [10.21468/SciPostPhys.12.3.099].
Bomans, P; Cassani, D; Dibitetto, G; Petri, N
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/351094
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