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Hydrodynamic effects on the filtered dark matter produced by a first-order phase transition

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arxiv 2305.02218 v3 pith:PALLGEKQ submitted 2023-05-03 hep-ph

Hydrodynamic effects on the filtered dark matter produced by a first-order phase transition

classification hep-ph
keywords hydrodynamiceffectsmechanismphasetransitioncorrespondingdarkdensity
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Motivated by current status of dark matter (DM) search, a new type of DM production mechanism is proposed based on thedynamical process of a strong first-order phase transition in the early universe, namely, the filtered DM mechanism. We study the hydrodynamic effects on the DM relic density. By detailed calculations, we demonstrate that the hydrodynamic modes with the corresponding hydrodynamic heating effects play essential roles in determining the DM relic density. The corresponding phase transition gravitational wave could help to probe this new mechanism.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Benchmarking wall velocities in cosmological phase transitions: Fluid Ansatz and WallGo

    astro-ph.CO 2026-07 conditional novelty 6.0

    The fluid-Ansatz and WallGo methods agree for mild phase transitions but diverge by tens of percent for strong ones, where the semi-classical approximation itself may break down.

  2. Exploring the statistical anisotropy of primordial curvature perturbations with pulsar timing arrays

    gr-qc 2026-04 unverdicted novelty 6.0

    A phenomenological dipole anisotropy in primordial perturbations induces dipolar and quadrupolar anisotropies in SIGW energy density spectra, producing frequency-dependent PTA overlap reduction functions that depend o...

  3. Hydrodynamics of Filtered Dark Matter: A Two-Component Approach

    hep-ph 2026-04 unverdicted novelty 6.0

    Filtered Dark Matter hydrodynamics during first-order phase transitions is modeled as a two-component fluid, yielding detonation-like and deflagration-like solutions in ballistic and local thermal equilibrium regimes ...

  4. Dark Matter Production from Bubble Collisions during a First-Order Phase Transition at the End of Inflation

    hep-ph 2026-05 unverdicted novelty 5.0

    Bubble collisions during a first-order phase transition at the end of inflation can generate the observed dark matter abundance in a restricted region of parameter space via direct production and spectator decays.