Cosmological imprints of non-thermalized dark matter
Abstract
Non-thermalized dark matter is a cosmologically viable alternative to the widely studied weakly interacting massive particle. We study the evolution of the dark matter phase-space distributions arising from freeze-in and superWIMP production as well as the combination of both. Utilizing our implementation in CLASS, we investigate the cosmological imprints on the matter power spectrum, constrained by Lyman-α forest observations. For the explicit example of a colored t-channel mediator model, we explore the cosmologically allowed parameter space highlighting the interplay of Lyman-α constraints with those from Big Bang Nucleosynthesis and the LHC.
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