Conformal portal to dark matter

We propose a new portal coupling to dark matter by taking advantage of the nonminimally coupled sector Ricci scalar. Such conformally induces couplings trace energy-momentum tensor matters including highly secluded particles. The is so feeble that produced freeze-in processes scatterings and/or decay mediator. consider two concrete realizations portal: induced Higgs and mediator portal. former case compatible with inflation, while latter can be tested direct detection experiments.