Is the compactified vacuum semiclassically unstable?

Kei ichi Maeda*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


It is shown, by applying the positive-energy theorem, that the present vacuum (M4×KD) in some higher-dimensional theories (e.g. the Candelas-Weinberg model) is stable against decay by quantum tunnelling without change of topology. Frieman and Kolb have found a quantum tunnelling instability of the present vacuum in the same models. But they did not take into account the gravitational effect, which is important and prevents the universe from decaying into the higher-dimensional de Sitter phase.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalPhysics Letters B
Issue number1
Publication statusPublished - 1987 Feb 26
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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