Dark Matter Freeze-out During Matter Domination

Abstract

We highlight the general scenario of dark matter freeze-out whilst the energy density of the universe is dominated by a decoupled non-relativistic species. Decoupling during matter domination changes the freeze-out dynamics, since the Hubble rate is parametrically different for matter and radiation domination. Furthermore, for successful Big Bang Nucleosynthesis the state dominating the early universe energy density must decay, this dilutes (or repopulates) the dark matter. As a result, the masses and couplings required to reproduce the observed dark matter relic density can differ significantly from radiation dominated freeze-out.

5 pages, 2 figures

References in corpus (5)

• First Dark Matter Search Results from the XENON1T Experiment
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• When the Universe Expands Too Fast: Relentless Dark Matter
• Dark Matter as a weakly coupled Dark Baryon
• Superheavy Thermal Dark Matter and Primordial Asymmetries

Cited by in corpus (48)

• A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
• Ultraviolet Freeze-in and Non-Standard Cosmologies
• Primordial Gravitational Waves in Nonstandard Cosmologies
• Primordial Black Hole Evaporation and Dark Matter Production: II. Interplay with the Freeze-In/Out Mechanism
• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Supercool Composite Dark Matter Beyond 100 TeV
• Phenomenology of Self-Interacting Dark Matter in a Matter-Dominated Universe
• Imprint of a scalar era on the primordial spectrum of gravitational waves
• Super heavy thermal dark matter
• Faint Light from Dark Matter: Classifying and Constraining Dark Matter-Photon Effective Operators
• Reconstructing Non-standard Cosmologies with Dark Matter
• Neutrino Portal to FIMP Dark Matter with an Early Matter Era
• Heavy Thermal Relics from Zombie Collisions
• WIMPs during Reheating
• Reviving $Z$ and Higgs Mediated Dark Matter Models in Matter Dominated Freeze-out
• Self-interacting dark matter without prejudice
• Neutralino Dark Matter in Scenarios with Early Matter Domination
• Energy Spectrum of Thermalizing High Energy Decay Products in the Early Universe
• Superstring-Inspired Particle Cosmology: Inflation, Neutrino Masses, Leptogenesis, Dark Matter & the SUSY Scale
• Light Dark Matter from Entropy Dilution
• A dark clue to seesaw and leptogenesis in a pseudo-Dirac singlet doublet scenario with (non)standard cosmology
• Stasis in an Expanding Universe: A Recipe for Stable Mixed-Component Cosmological Eras
• Probing superheavy dark matter with gravitational waves
• Establishing the Dark Matter Relic Density in an Era of Particle Decays
• Twin Higgs Portal Dark Matter
• Unitarity limits on thermal dark matter in (non-)standard cosmologies
• Phenomenology of doublet-triplet fermionic dark matter in nonstandard cosmology and multicomponent dark sectors
• Dark Matter freezeout in modified cosmological scenarios
• WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
• Higgsino Dark Matter in a Non-Standard History of the Universe
• Dark Radiation from the Primordial Thermal Bath in Momentum Space
• Dark Matter Freeze Out during an Early Cosmological Period of QCD Confinement
• A warped scalar portal to fermionic dark matter
• EvoEMD: cosmic evolution with an early matter-dominated era
• Matter-antimatter asymmetry and dark matter stability from baryon number conservation
• Frozen-in fermionic singlet dark matter in non-standard cosmology with a decaying fluid
• Bi-metric Universe with Matter
• Dark Matter Freeze-out during $\mathrm{SU}(2{)}_{\mathrm{L}}$ Confinement
• Dark matter cooling during early matter-domination boosts sub-earth halos
• WIMP dark matter in bulk viscous non-standard cosmologies
• Unraveling particle dark matter with Physics-Informed Neural Networks
• FIMP Dark Matter in bulk viscous non-standard cosmologies
• Freeze-in and freeze-out production of Higgs portal Majorana fermionic dark matter during and after reheating
• Anomalous EDGES 21-cm Signal and Moduli Dominated Era
• Decoupling of Asymmetric Dark Matter During an Early Matter Dominated Era
• Primordial black holes and lepton flavor violation with scotogenic dark matter
• Fingerprints of freeze-in dark matter in an early matter-dominated era
• Roads for Right-handed Neutrino Dark Matter: Fast Expansion, Standard Freeze-out, and Early Matter Domination