Adiabatic Conversion of ALPs into Dark Photon Dark Matter
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866915347287769088 |
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| author | Broadberry, Edward Das, Saurav Hook, Anson Marques-Tavares, Gustavo |
| author_facet | Broadberry, Edward Das, Saurav Hook, Anson Marques-Tavares, Gustavo |
| contents | We introduce a mechanism by which a misaligned ALP can be dynamically converted into a dark photon in the presence of a background magnetic field. An abundance of non-relativistic ALPs will convert to dark photons with momentum of order the inhomogeneities in the background field; therefore a highly homogeneous field will produce non-relativistic dark photons without relying on any redshifting of their momenta. Taking hidden sector magnetic fields produced by a first order phase transition, the mechanism can reproduce the relic abundance of dark matter for a wide range of dark photon masses down to $10^{-13}$ eV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_03370 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Adiabatic Conversion of ALPs into Dark Photon Dark Matter Broadberry, Edward Das, Saurav Hook, Anson Marques-Tavares, Gustavo High Energy Physics - Phenomenology We introduce a mechanism by which a misaligned ALP can be dynamically converted into a dark photon in the presence of a background magnetic field. An abundance of non-relativistic ALPs will convert to dark photons with momentum of order the inhomogeneities in the background field; therefore a highly homogeneous field will produce non-relativistic dark photons without relying on any redshifting of their momenta. Taking hidden sector magnetic fields produced by a first order phase transition, the mechanism can reproduce the relic abundance of dark matter for a wide range of dark photon masses down to $10^{-13}$ eV. |
| title | Adiabatic Conversion of ALPs into Dark Photon Dark Matter |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2408.03370 |