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- W2019909112 abstract "Abstract We consider cosmological consequences of the spontaneous breaking of a global symmetry that is anomalous under technicolor interactions, leading to the emergence of a light axion-like particle. Avoiding overclosure of the universe by such axions yields the upper bound f a ≲ 10 10 GeV on the symmetry breaking scale, corresponding to keV-scale axions. However, diffuse X-ray background data typically require larger values of f a . The overclosure and X-ray bounds can be reconciled if the axion initial amplitude of oscillations A i ∼ f a / 10 . In this case, a viable axionic dark matter candidate with a mass in the 50–100 eV range emerges. The detection of this type of dark matter may pose a challenge." @default.
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- W2019909112 date "2007-03-01" @default.
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- W2019909112 title "Cosmology with light axions from technicolor" @default.
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- W2019909112 doi "https://doi.org/10.1016/j.physletb.2007.01.023" @default.
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