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Primordial inflation and Dark Matter (DM) could both belong to the hiddensector. It is therefore plausible that the inflaton, which drives inflation,could couple to the DM either directly or indirectly, thus providing a commonorigin for both luminous and non-luminous matter. We explore this interestingpossibility and show that, in certain scenarios, the DM mass can be correlatedwith the tensor-to-scalar ratio. This correlation might provide us with awindow of opportunity for unravelling the properties of DM beyond the standardfreeze-out paradigm.

Connection between dark matter abundance and primordial tensor perturbations