Energy-Momentum portal to dark matter and emergent gravity

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.

arXiv comment12 pages, 5 figures, in memory of Renaud Parentani. Minor changes and updates in citations

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Cited by in corpus (16)

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• How warm are non-thermal relics? Lyman-$\alpha$ bounds on out-of-equilibrium dark matter
• Boltzmann or Bogoliubov? Approaches Compared in Gravitational Particle Production
• Freeze-in from Preheating
• Scalar Dark Matter Production from Preheating and Structure Formation Constraints
• Reheating and Dark Matter Freeze-in in the Higgs-$R^2$ Inflation Model
• Disformal Dark Matter
• FIMP Dark Matter in Clockwork/Linear Dilaton Extra-Dimensions
• Gauged Quintessence
• Conformal Portal to Dark Matter
• Metastable Conformal Dark Matter
• Anomalous and axial Z' contributions to g-2
• Emergent neutrinos from heavy messengers
• Dark Fluxes from Accreting Black Holes and Direct Detections
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• Light stringy states and the $g-2$ of the muon