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Light Dark Photon Dark Matter from Inflation
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title
Light Dark Photon Dark Matter from Inflation
Creator
Wang, Ziwei
Nakai, Yuichiro
Namba, Ryo
source
ArXiv
abstract
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 $10^{-21} /, /rm eV$.
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2020-04-22
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6475715fd9bca11684ddcc7f8d1859f0e151df46
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Light Dark Photon Dark Matter from Inflation
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