Gravitational positivity bounds applied to Higgs-portal dark matter constrain new physics to below 10^10 GeV for light dark matter or require dark matter masses around 10^10-10^11 GeV for GUT-scale cutoffs, with freeze-in relic abundance possible for tiny couplings.
Loges, and Sota Nakajima
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Gravitational Positivity Bounds on Higgs-Portal Dark Matter
Gravitational positivity bounds applied to Higgs-portal dark matter constrain new physics to below 10^10 GeV for light dark matter or require dark matter masses around 10^10-10^11 GeV for GUT-scale cutoffs, with freeze-in relic abundance possible for tiny couplings.