Bubbles of nothing and AdS instabilities

Nicolò Petri

Research output: Contribution to journalConference articlepeer-review


In this contribution we review the ideas and results presented in the articles [1] and [2] where the decay of AdS vacua into bubbles of nothing is studied. We firstly consider AdS vacua in General Relativity with a cosmological constant and in arbitrary dimensions. In this context we study a class of gravitational instantons generalizing the Witten's bubble of nothing and we discuss the derivation of the euclidean action. Secondly we consider a “stringy” non-supersymmetric AdS4 vacuum arising in a compactification of massive IIA supergravity on a S6 and preserving G2 symmetry. This vacuum has been shown to have a fully stable KK spectrum and also to be protected against brane-jet decays. In this framework we discuss a bubble solution in massive IIA connected to the G2-invariant vacuum and associated to an instability channel. We finally provide the interpretation of this instability in terms of the nucleation of a bubble of nothing dressed up with a D2 charge distribution.

Original languageEnglish
Article number170
JournalProceedings of Science
StatePublished - 23 Nov 2022
Event20th Hellenic School and Workshops on Elementary Particle Physics and Gravity, CORFU 2021 - Corfu, Greece
Duration: 29 Aug 20219 Oct 2021

ASJC Scopus subject areas

  • General


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