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PreprintCC BY 4.0arXiv

Non-supersymmetric M-theory vacua and dark bubbles

  • Vincent Menet
  • Alessandro Tomasiello
  • Vincent Van Hemelryck
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Abstract

An expanding bubble in AdS5 has a dS4 geometry; the dark bubble scenario explores whether this can be our Universe. Motivated by this, we consider new non-supersymmetric AdS5 compactifications of M-theory and investigate their non-perturbative instabilities. We focus on a compactification on the flag manifold. In certain regions of the flux landscape, the non-supersymmetric vacua become unstable under the nucleation of M5-brane bubbles wrapping an internal two-cycle, thus realising the dark bubble scenario. The cosmological constant on the bubble can be made parametrically small by tuning the internal fluxes, making the M5-branes close to the extremality bound. The solution relates the induced cosmological constant on the brane and the typical largest length scale of the extra dimensions through R−1∼ Λ41/4 in 4d Planck units, allowing for extra dimensions of the order of tens of microns. We also consider various alternatives, which for various reasons are currently not as successful.

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Cite

BibTeXRIS
BibTeX
@misc{menet2026nonsupersymmetric,
  title = {{Non-supersymmetric M-theory vacua and dark bubbles}},
  author = {Vincent Menet and Alessandro Tomasiello and Vincent Van Hemelryck},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.08939},
  eprint = {2610.08939},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.08939},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Non-supersymmetric M-theory vacua and dark bubbles
AU  - Vincent Menet
AU  - Alessandro Tomasiello
AU  - Vincent Van Hemelryck
PY  - 2026
DA  - 2026/10/06
PB  - arXiv
DO  - 10.48550/arxiv.2610.08939
UR  - https://arxiv.org/abs/2610.08939
AB  - An expanding bubble in AdS_5 has a dS_4 geometry; the dark bubble scenario explores whether this can be our Universe. Motivated by this, we consider new non-supersymmetric AdS_5 compactifications of M-theory and investigate their non-perturbative instabilities. We focus on a compactification on the flag manifold. In certain regions of the flux landscape, the non-supersymmetric vacua become unstable under the nucleation of M5-brane bubbles wrapping an internal two-cycle, thus realising the dark bubble scenario. The cosmological constant on the bubble can be made parametrically small by tuning the internal fluxes, making the M5-branes close to the extremality bound. The solution relates the induced cosmological constant on the brane and the typical largest length scale of the extra dimensions through R^−1∼ Λ_4^1/4 in 4d Planck units, allowing for extra dimensions of the order of tens of microns. We also consider various alternatives, which for various reasons are currently not as successful.
ER  -