Pure Gravitational Dark Matter, Its Mass and Signatures

Abstract

In this study, we investigate a scenario that dark matter (DM) has only gravitational interaction. In the framework of effective field theory of gravity, we find that DM is still stable at tree level even if there is no symmetry to protect its longevity, but could decay into standard model particles due to gravitational loop corrections. The radiative corrections can lead to both higher- and lower-dimensional effective operators. We also first explore how DM can be produced in the early universe. Through gravitational interaction at high temperature, DM is then found to have mass around TeV $\lesssim m_X\lesssim 10^{11}$GeV to get the right relic abundance. When DM decays, it mostly decays into gravitons, which could be tested by current and future CMB experiments. We also estimate the resulting fluxes for cosmic rays, gamma-ray and neutrino.

6 pages, 3 figures

Cited by in corpus (45)

• The Dawn of FIMP Dark Matter: A Review of Models and Constraints
• Production of Purely Gravitational Dark Matter: The Case of Fermion and Vector Boson
• Gravitational Particle Production in Oscillating Background and Its Cosmological Implications
• Production of Purely Gravitational Dark Matter
• Theory and Phenomenology of Planckian Interacting Massive Particles as Dark Matter
• Heavy spin-2 Dark Matter
• Quantum gravity fluctuations flatten the Planck-scale Higgs potential
• On Thermal Gravitational Contribution to Particle Production and Dark Matter
• Gravitational Origin of Dark Matter
• Misalignment & Co.: (Pseudo-)scalar and vector dark matter with curvature couplings
• Gravitational particle creation for dark matter and reheating
• Despicable Dark Relics: generated by gravity with unconstrained masses
• On UltraViolet Freeze-in Dark Matter during Reheating
• Gravity as a Portal to Reheating, Leptogenesis and Dark Matter
• Lightish but clumpy: scalar dark matter from inflationary fluctuations
• Ultraviolet Freeze-in with a Time-dependent Inflaton Decay
• Cosmological Signatures of Superheavy Dark Matter
• Interplay between neutrino and gravity portals for FIMP dark matter
• Gravitational Production of a Conformal Dark Sector
• Impact of Higgs portal on gravity-mediated production of superheavy dark matter
• Charged Planckian Interacting Dark Matter
• Dark QCD Matters
• Symmergent Gravity, Seesawic New Physics, and their Experimental Signatures
• Polynomial Inflation and Dark Matter
• Emergent Gravity as the Eraser of Anomalous Gauge Boson Masses, and QFT-GR Concord
• Scalar field couplings to quadratic curvature and decay into gravitons
• Weyl Scaling Invariant $R^2$ Gravity for Inflation and Dark Matter
• Dark matter decay through gravity portals
• Non-minimally Coupled Vector Boson Dark Matter
• Micro black holes formed in the early Universe and their cosmological implications
• Gravitational Atoms
• Inflection-point Inflation and Dark Matter Redux
• Dark matter relic density from conformally or disformally coupled light scalars
• Primordial Gravitational Waves as Probe of Dark Matter in Interferometer Missions: Fisher Forecast and MCMC
• Dark Matter Production in Weyl $R^2$ Inflation
• Gauge and Poincare properties of the UV cutoff and UV completion in quantum field theory
• A Note on Gravitational Particle Production in Supergravity
• Purely gravitational dark matter production in warm inflation
• Jump Starting the Dark Sector with a Phase Transition
• Thermal evolution of dark matter and gravitational-wave production in the early universe from a symplectic glueball model
• Probing Gravitational Dark Matter with Ultra-high Frequency Gravitational Waves
• Post-inflationary production of particle Dark Matter: Hilltop and Coleman-Weinberg inflation
• Freeze-in gravitational waves and dark matter in warm inflation
• Gravitational SIMPs
• Naturally-Coupled Dark Sectors