Cosmological axion bounds
classification
✦ hep-ph
astro-ph.CO
keywords
axionaxionsboundscosmologicalcurrentdarkdiscussfuture
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We discuss current cosmological constraints on axions, as well as future sensitivities. Bounds on axion hot dark matter are discussed first, and subsequently we discuss both current and future sensitivity to models in which axions play the role as cold dark matter, but where the Peccei-Quinn symmetry is not restored during reheating.
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