Bouncing Dark Matter

Abstract

We present a novel mechanism for thermal dark matter production, characterized by a "bounce": the dark matter equilibrium distribution transitions from the canonical exponentially falling abundance to an exponentially rising one, resulting in an enhancement of the freezeout abundance by many orders of magnitude. We discuss several realizations of bouncing dark matter. The bounce allows the present day dark matter annihilation cross section to be significantly larger than the canonical thermal target, improving the prospects for indirect detection signals.

9 pages, 7 figures; v2: minor changes and references added, matches published version

References in corpus (35)

• A Theory of Dark Matter
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• The SIMP Miracle
• Superweakly Interacting Massive Particles
• Thermal Relics in Hidden Sectors
• Forbidden Dark Matter
• Elastically Decoupling Dark Matter
• Cannibal Dark Matter
• Dark Matter Annihilation to Neutrinos
• Model-Independent Indirect Detection Constraints on Hidden Sector Dark Matter
• Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
• A Fourth Exception in the Calculation of Relic Abundances
• Co-Decaying Dark Matter
• Coannihilation without chemical equilibrium
• Multi-Step Cascade Annihilations of Dark Matter and the Galactic Center Excess
• Phases of Cannibal Dark Matter
• Enabling Forbidden Dark Matter
• Super heavy thermal dark matter
• Light Dark Matter through Assisted Annihilation
• Heavy Thermal Relics from Zombie Collisions
• Right-handed sneutrino dark matter in $\mathbf{U}(1{)}^{\prime }$ seesaw models and its signatures at the LHC
• Impeded Dark Matter
• Dark Forces in the Sky: Signals from Z' and the Dark Higgs
• Exchange driven freeze out of dark matter
• New Pathways to the Relic Abundance of Vector-Portal Dark Matter
• WIMPs with GUTs: Dark Matter Coannihilation with a Lighter Species
• Split SIMPs with Decays
• Scalar and Fermion Two-component SIMP Dark Matter with an Accidental ${\mathbb{Z}}_4^{}$ Symmetry
• A Worldline Theory for Supergravity
• Roadmap to Thermal Dark Matter Beyond the WIMP Unitarity Bound
• Simple Hidden Sector Dark Matter
• An Asymmetric SIMP Dark Matter Model
• Wobbly Dark Matter Signals at Cherenkov Telescopes from Long Lived Mediator Decays
• Indirect Detection of Secluded Supersymmetric Dark Matter
• Reshuffled Strongly Interacting Massive Particle Dark Matter

Cited by in corpus (1)

• On the cosmology and terrestrial signals of sexaquark dark matter