Energy-Momentum portal to dark matter and emergent gravity

TL;DR

This paper introduces a novel dark matter model where dark matter interacts with the Standard Model via energy-momentum tensors, inspired by emergent gravity theories, and demonstrates its viability through early universe thermal production.

Contribution

It proposes a new secluded sector coupling to the Standard Model through energy-momentum tensors, linking dark matter to emergent gravity frameworks.

Findings

Dark matter can be produced in sufficient abundance despite weak couplings.

The model aligns with early universe thermal history.

It offers a new perspective on gravity and dark matter connection.

Abstract

We propose a new scenario where dark matter belongs to a secluded sector coupled to the Standard Model through energy--momentum tensors. Our model is motivated by constructions where gravity {\it emerges} from a hidden sector, the graviton being identified by the kinetic term of the fields in the secluded sector. Supposing that the lighter particle of the secluded sector is the dark component of the Universe, we show that we can produce it in a sufficiently large amount despite the suppressed couplings of the theory, thanks to large temperatures of the thermal bath in the early stage of the Universe.