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JOURNAL OF HIGH ENERGY PHYSICS (2020)

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JOURNAL OF HIGH ENERGY PHYSICS

卷 -, 期 8, 页码 -

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SPRINGER

DOI: 10.1007/JHEP08(2020)040

关键词

Superstring Vacua; Flux compactifications

类别

Physics, Particles & Fields

资金

Scientific and Technological Research Council of Turkey (Tubitak) [116F137]
Principado de Asturias [FC-GRUPIN-IDI/2018/000174]
Swedish Research Council (VR)

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摘要

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.

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