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Adiabatic Conversion of ALPs into Dark Photon Dark Matter

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arxiv 2408.03370 v2 pith:FS3FTM6E submitted 2024-08-06 hep-ph

Adiabatic Conversion of ALPs into Dark Photon Dark Matter

Edward Broadberry , Saurav Das , Anson Hook , Gustavo Marques-Tavares This is my paper
classification hep-ph
keywords darkfieldphotonabundancealpsbackgroundmagneticmatter
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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Cited by 3 Pith papers

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