Conformal Freeze-in dark matter: 5D dual and phase transition
Abstract Conformal Freeze-in (COFI) scenario postulates a dark sector described by a conformal field theory (CFT) at energies above the “gap scale” in the keV – MeV range. At the gap scale, the dark CFT undergoes confinement, and one of the resulting bound states is identified as the dark matter can...
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2025-06-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP06(2025)154 |
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| author | Lillian Luo Maxim Perelstein |
| author_facet | Lillian Luo Maxim Perelstein |
| author_sort | Lillian Luo |
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| description | Abstract Conformal Freeze-in (COFI) scenario postulates a dark sector described by a conformal field theory (CFT) at energies above the “gap scale” in the keV – MeV range. At the gap scale, the dark CFT undergoes confinement, and one of the resulting bound states is identified as the dark matter candidate. In this paper, we study this model in the context of the AdS/CFT correspondence with a focus on the mechanism of the infrared (IR) breaking of conformal invariance in the dark sector. We construct the holographic dual to the conformal dark sector, given by a Randall-Sundrum-like model in 5D, where the Standard Model (SM) fields and the dark matter candidate are placed on the ultraviolet (UV) and IR branes respectively. The separation between the UV and IR branes is stabilized by a bulk scalar field, naturally generating a hierarchy between the electroweak scale and the gap scale. We find that the parameter space of COFI comprises two distinct branches of CFT’s living on the Anti-de-Sitter (AdS) boundary, each corresponding to a different UV boundary condition. The two branches of CFT’s result in different radion potentials. The confinement of the CFT is dual to the spontaneous symmetry breaking by the 5D radion potential. We then use this dual 5D setup to study the cosmological confining phase transition in the dark sector. We find the viable parameter space of the theory which allows the phase transition to complete promptly without significant supercooling. |
| format | Article |
| id | doaj-art-fac3b7c00ebe41cc9c13acf3a6295ca8 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
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| series | Journal of High Energy Physics |
| spelling | doaj-art-fac3b7c00ebe41cc9c13acf3a6295ca82025-08-20T04:01:47ZengSpringerOpenJournal of High Energy Physics1029-84792025-06-012025612110.1007/JHEP06(2025)154Conformal Freeze-in dark matter: 5D dual and phase transitionLillian Luo0Maxim Perelstein1Department of Physics, LEPP, Cornell UniversityDepartment of Physics, LEPP, Cornell UniversityAbstract Conformal Freeze-in (COFI) scenario postulates a dark sector described by a conformal field theory (CFT) at energies above the “gap scale” in the keV – MeV range. At the gap scale, the dark CFT undergoes confinement, and one of the resulting bound states is identified as the dark matter candidate. In this paper, we study this model in the context of the AdS/CFT correspondence with a focus on the mechanism of the infrared (IR) breaking of conformal invariance in the dark sector. We construct the holographic dual to the conformal dark sector, given by a Randall-Sundrum-like model in 5D, where the Standard Model (SM) fields and the dark matter candidate are placed on the ultraviolet (UV) and IR branes respectively. The separation between the UV and IR branes is stabilized by a bulk scalar field, naturally generating a hierarchy between the electroweak scale and the gap scale. We find that the parameter space of COFI comprises two distinct branches of CFT’s living on the Anti-de-Sitter (AdS) boundary, each corresponding to a different UV boundary condition. The two branches of CFT’s result in different radion potentials. The confinement of the CFT is dual to the spontaneous symmetry breaking by the 5D radion potential. We then use this dual 5D setup to study the cosmological confining phase transition in the dark sector. We find the viable parameter space of the theory which allows the phase transition to complete promptly without significant supercooling.https://doi.org/10.1007/JHEP06(2025)154Cosmology of Theories BSMExtra DimensionsModels for Dark MatterPhase Transitions in the Early Universe |
| spellingShingle | Lillian Luo Maxim Perelstein Conformal Freeze-in dark matter: 5D dual and phase transition Journal of High Energy Physics Cosmology of Theories BSM Extra Dimensions Models for Dark Matter Phase Transitions in the Early Universe |
| title | Conformal Freeze-in dark matter: 5D dual and phase transition |
| title_full | Conformal Freeze-in dark matter: 5D dual and phase transition |
| title_fullStr | Conformal Freeze-in dark matter: 5D dual and phase transition |
| title_full_unstemmed | Conformal Freeze-in dark matter: 5D dual and phase transition |
| title_short | Conformal Freeze-in dark matter: 5D dual and phase transition |
| title_sort | conformal freeze in dark matter 5d dual and phase transition |
| topic | Cosmology of Theories BSM Extra Dimensions Models for Dark Matter Phase Transitions in the Early Universe |
| url | https://doi.org/10.1007/JHEP06(2025)154 |
| work_keys_str_mv | AT lillianluo conformalfreezeindarkmatter5ddualandphasetransition AT maximperelstein conformalfreezeindarkmatter5ddualandphasetransition |