The dark dimension and the Swampland
Motivated by principles from the Swampland program, which characterize requirements for a consistent UV completion of quantum gravity, combined with observational data, we are led to a unique corner of the quantum gravity landscape. In particular, using the Distance/Duality conjecture and the smalln...
| Authors: | , , |
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| Format: | article |
| Publication Date: | 2023 |
| Country: | España |
| Institution: | Universidad Autónoma de Madrid |
| Repository: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Language: | English |
| OAI Identifier: | oai:repositorio.uam.es:10486/746001 |
| Online Access: | https://hdl.handle.net/10486/746001 https://dx.doi.org/10.1007/JHEP02(2023)022 |
| Access Level: | Open access |
| Keyword: | Hierarchy Problem large extra dimensions string and brane phenomenology superstring vacua Física |
| Summary: | Motivated by principles from the Swampland program, which characterize requirements for a consistent UV completion of quantum gravity, combined with observational data, we are led to a unique corner of the quantum gravity landscape. In particular, using the Distance/Duality conjecture and the smallness of dark energy, we predict the existence of a light tower of states and a unique extra mesoscopic dimension of length l~Λ ⁻¹⁄₄~ 10 ⁻⁶m, with extra massless fermions propagating on it. This automatically leads to a candidate for a tower of sterile neutrinos, and an associated active neutrino mass scale mυ~ (H)²Λ ⁻¹⁄₁₂Mρl ⁻⅓ . Moreover, assuming the mechanism for stabilization of this dark dimension leads to similar masses for active and sterile neutrinos we are led to the prediction of a Higgs vev (H)~Λ ⁻⅙Mρl⅓ . Another prediction of the scenario is a species scale M~Λ ⁻¹⁄₁₂Mρl⅔~10 ⁹ -10¹⁰ GeV, corresponding to the higher-dimensional Planck scale. This energy scale may be related to the resolution of the instability of the Higgs effective potential present at a scale of ~10¹¹ GeV. We also speculate about the interplay between this energy scale and the GZK limit on ultra-high energy cosmic rays |
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