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Implication of nano-Hertz stochastic gravitational wave on dynamical dark matter through a dark first-order phase transition

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arxiv 2306.17827 v5 pith:KDZY5YPV submitted 2023-06-30 hep-ph

Implication of nano-Hertz stochastic gravitational wave on dynamical dark matter through a dark first-order phase transition

Siyu Jiang , Aidi Yang , Jiucheng Ma , Fa Peng Huang This is my paper
classification hep-ph
keywords darkgravitationalphasestochastictransitionwavebackgrounddynamical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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For the first time, the expected stochastic gravitational wave background is probably discovered after observing the Hellings Downs correlation curve by several pulsar timing array (PTA) collaborations around the globe including NANOGrav, European PTA, Parkes PTA, and Chinese PTA. These new observations can help to explore or constrain the dark matter (DM) formation mechanisms in the early Universe. We study the implication of those results on the dynamical DM formation mechanisms through a dark first-order phase transition in the early Universe. Both the Q-ball DM and super-cool DM are investigated in the strong super-cooling dark phase transition scenario which may give an interpretation of the observed stochastic gravitational wave background.

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Cited by 2 Pith papers

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  1. Neutron Portal and Dark Matter-Baryon Coincidence: from UV Completion to Phenomenology

    hep-ph 2026-04 unverdicted novelty 6.0

    A UV-complete neutron portal model dynamically solves the dark matter-baryon coincidence via a supercooled dark confinement transition that generates GeV-scale asymmetric DM and links to observed gravitational waves.

  2. 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.