  Primordial inflation and Dark Matter (DM) could both belong to the hidden
sector. It is therefore plausible that the inflaton, which drives inflation,
could couple to the DM either directly or indirectly, thus providing a common
origin for both luminous and non-luminous matter. We explore this interesting
possibility and show that, in certain scenarios, the DM mass can be correlated
with the tensor-to-scalar ratio. This correlation might provide us with a
window of opportunity for unravelling the properties of DM beyond the standard
freeze-out paradigm.
