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Peer-reviewedCC BY 4.0Journal of High Energy Physics

Holographic dark matter

  • Sylvain Fichet1
  • Eugenio Megías2
  • Mariano Quirós3
  1. 1CCNH, Universidade Federal do ABC
  2. 2Universidad de Granada
  3. 3Institut de Física d’Altes Energies (IFAE) and The Barcelona Institute of Science and Technology (BIST), Campus UAB
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Abstract

Cold dark matter may be a fluid (or plasma) residing in a strongly-interacting hidden sector, rather than a population of weakly-coupled particles. Such a scenario admits a holographic description in terms of a cosmological braneworld embedded in the linear dilaton five-dimensional (5D) spacetime. In this framework, dark matter originates from the linear dilaton bulk black hole, whose phase we show to be thermodynamically favored at all temperatures. We present a natural freeze-in mechanism for the production of holographic dark matter, in which the bulk black hole is fed by energy leaking from the brane after inflation. Our model is characterized by two free parameters, one of which, the position of the black hole horizon, is fixed by the observed dark matter abundance. The remaining parameter, the 5D Planck scale M5, is consistent with all current experimental bounds provided that M5 ≳ 3 × 105 TeV.

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Cite

BibTeXRIS
BibTeX
@article{fichet2026holographic,
  title = {{Holographic dark matter}},
  author = {Sylvain Fichet and Eugenio Megías and Mariano Quirós},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = oct,
  doi = {10.1007/jhep10(2026)268},
  url = {https://link.springer.com/article/10.1007/JHEP10(2026)268},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Holographic dark matter
AU  - Sylvain Fichet
AU  - Eugenio Megías
AU  - Mariano Quirós
PY  - 2026
DA  - 2026/10/28
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep10(2026)268
UR  - https://link.springer.com/article/10.1007/JHEP10(2026)268
AB  - Cold dark matter may be a fluid (or plasma) residing in a strongly-interacting hidden sector, rather than a population of weakly-coupled particles. Such a scenario admits a holographic description in terms of a cosmological braneworld embedded in the linear dilaton five-dimensional (5D) spacetime. In this framework, dark matter originates from the linear dilaton bulk black hole, whose phase we show to be thermodynamically favored at all temperatures. We present a natural freeze-in mechanism for the production of holographic dark matter, in which the bulk black hole is fed by energy leaking from the brane after inflation. Our model is characterized by two free parameters, one of which, the position of the black hole horizon, is fixed by the observed dark matter abundance. The remaining parameter, the 5D Planck scale M5, is consistent with all current experimental bounds provided that M5 ≳ 3 × 105 TeV.
SN  - 1029-8479
ER  -