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Recycled dark matter
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DOI：10.1088/1475-7516/2024/03/044.png)
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摘要
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We outline a new production mechanism for dark matter that we dub recycling: dark sector particles are kinematically trapped in the false vacuum during a dark phase transition; the false pockets collapse into primordial black holes (PBHs), which ultimately evaporate before Big Bang Nucleosynthesis (BBN) to reproduce the dark sector particles. The requirement that all PBHs evaporate prior to BBN necessitates high scale phase transitions and hence high scale masses for the dark sector particles in the true vacuum. Our mechanism is therefore particularly suited for the production of ultra heavy dark matter (UHDM) with masses above similar to 1012 GeV. The correct relic density of UHDM is obtained because of the exponential suppression of the false pocket number density. Recycled UHDM has several novel features: the dark sector today consists of multiple decoupled species that were once in thermal equilibrium and the PBH formation stage has extended mass functions whose shape can be controlled by IR operators coupling the dark and visible sectors.
Keyword:
cosmology of theories beyond the SM
dark matter theory
particle physics cosmology connection
primordial black holes
期刊
IF:
5.9
论文数:
1.3W
被引数:
4.7W
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