Nothing really matters

Giuseppe Dibitetto, Nicolò Petri, Marjorie Schillo

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We study non-perturbative instabilities of AdS spacetime in General Relativity with a cosmological constant in arbitrary dimensions. In this simple setup we explicitly construct a class of gravitational instantons generalizing Witten’s bubble of nothing. We calculate the corresponding Euclidean action and show that its change is finite. The expansion of these bubbles is described by a lower-dimensional de Sitter geometry within a non- compact foliation of the background spacetime. Moreover we discuss the existence of covariantly constant spinors as a possible topological obstruction for such decays to occur. This mechanism is further connected to the stability of supersymmetric vacua in string theory.

Original languageEnglish
Article number40
JournalJournal of High Energy Physics
Volume2020
Issue number8
DOIs
StatePublished - 1 Aug 2020
Externally publishedYes

Keywords

  • Flux compactifications
  • Superstring Vacua

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