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Production of Purely Gravitational Dark Matter: The Case of Fermion and Vector Boson
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We consider the simplest possibility for a model of particle dark matter in which dark matter has only gravitational interaction with the standard model sector. Even in such a case, it is known that the gravitational particle production in an expanding universe may lead to a correct relic abundance depending on the inflation scale and the mass of dark matter particle. We provide a comprehensive and systematic analysis of the gravitational particle production of fermionic and vectorial dark matter, and emphasize that particles which are much heavier than the Hubble parameter but lighter than inflaton can also be produced abundantly.
Forward citations
Cited by 11 Pith papers
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Identifying Monochromatic Signals in LISA and Taiji via Spectral Split: Gravitational Waves versus Ultralight Dark Matter
Orbital motion of a space GW detector creates sideband patterns that differ between gravitational waves and ultralight dark matter, enabling discrimination by counting harmonics.
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Generating Moving Field Initial Conditions with Spatially Varying Boost
A 'spatially varying boost' algorithm assigns arbitrary, position-dependent bulk velocities to field initial data by composing local Lorentz boosts, demonstrated on solitons, Proca fields, and spin-1 wave dark matter.
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Distinguishing Monochromatic Signals in LISA and Taiji: Ultralight Dark Matter versus Gravitational Waves
Null-response interferometric channels can separate monochromatic ultralight dark matter signals from gravitational waves in LISA and Taiji, most effectively at high frequencies.
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Light PIDM in Warped Extra Dimensions
A UV-Dark-IR brane construction in warped 5D space allows light (MeV-TeV) purely gravitational dark matter to freeze in with TeV-scale reheating temperatures.
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Dark Photon Dark Matter from Quantum Fluctuations during Starobinsky Inflation
Dark photons produced by quantum fluctuations during Starobinsky inflation must have a mass of 5.6–7.4 µeV to be all the dark matter.
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Searching for Dark Photons with a room-temperature dielectric haloscope
No excess in 904 h of stack-on data yields a 90% CL limit κ < 4.0×10^{-13} for 1.9 eV/c² dark-photon dark matter with a template-calibrated dielectric-CMOS haloscope.
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The effects of non Bunch-Davies initial conditions on gravitationally produced relics
Non-Bunch–Davies initial conditions can drastically change gravitationally produced vector dark matter abundances, opening a wider viable mass range.
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Light Dark Matter Detection with Sub-eV Transition-Edge Sensors
Optical transition-edge sensors with sub-eV thresholds are projected to probe unexplored light dark matter parameter space with nanogram-month exposures.
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The Highest-Energy Neutrino Event Constrains Dark Matter-Neutrino Interactions
KM3-230213A limits dark matter-neutrino scattering to below about 1e-22 cm^2/GeV at 220 PeV, but most simple dark matter models are excluded by unitarity above MeV masses.
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Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
Two phenomenological dark matter creation rates can reproduce the accelerated expansion of the universe and fit current background data as well as or slightly better than LambdaCDM for some DESI-based data combinations.
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Massless limit of massive self-interacting vector fields
For massive Proca fields with quartic self-interaction, the massless limit is not smooth: classical hyperbolicity loss persists at arbitrarily small mass, and the Vainshtein mechanism does not restore unitarity at sca...
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