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Light dark photon dark matter from inflation

We discuss the possibility of producing a light dark photon dark matter through a coupling between the dark photon field and the inflaton. The dark photon with a large wavelength is efficiently produced due to the inflaton motion during inflation and becomes non-relativistic before the time of matte...

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Detalles Bibliográficos
Autores principales: Nakai, Yuichiro, Namba, Ryo, Wang, Ziwei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7768992/
https://www.ncbi.nlm.nih.gov/pubmed/33390726
http://dx.doi.org/10.1007/JHEP12(2020)170
Descripción
Sumario:We discuss the possibility of producing a light dark photon dark matter through a coupling between the dark photon field and the inflaton. The dark photon with a large wavelength is efficiently produced due to the inflaton motion during inflation and becomes non-relativistic before the time of matter-radiation equality. We compute the amount of production analytically. The correct relic abundance is realized with a dark photon mass extending down to 10(−21) eV.