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Magnetogenesis with gravitational waves and primordial black hole dark matter

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arxiv 2402.05179 v3 pith:IPHUGF6O submitted 2024-02-07 hep-ph astro-ph.COastro-ph.HE

Shyam Balaji , Malcolm Fairbairn , Maria Olalla Olea-Romacho This is my paper · ORCID
classification hep-phastro-ph.COastro-ph.HE
keywords fieldsmagneticprimordialproduceblackbubblecollisionsdark
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abstract

Strongly supercooled first order phase transitions (FOPTs) can produce primordial black hole (PBH) dark matter (DM) along with observable gravitational waves (GWs) from bubble collisions. Such FOPTs may also produce coherent magnetic fields generated by bubble collisions and by turbulence in the primordial plasma. Here we find that the requirement for PBH DM can produce large primordial magnetic fields which subsequently yield intergalactic magnetic fields in the present universe (with magnitude $\lesssim 20$ pG across coherence length scales of $\simeq 0.001$-$0.01$ Mpc, assuming maximally helical magnetic fields) that easily exceed lower bounds from blazar observations. We follow a largely model independent approach and highlight the possibility of producing DM and observable multi-messenger magnetic fields and GW signals visible in next generation experiments.

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Cited by 3 Pith papers

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

  1. Can the universe be matter-dominated after a supercooled first-order phase transition?

    hep-ph 2026-07 conditional novelty 7.0 of 10

    After a supercooled first-order phase transition, the scalar field's equation of state is set by the bubble-wall Lorentz factor γ*, and matter domination is delayed until a/a* ≃ γ* in the free-streaming limit.

  2. Primordial Black Hole Formation via Inverted Bubble Collapse

    astro-ph.CO 2025-02 conditional novelty 6.0 of 10

    Isolated bubbles from an incomplete phase transition, inverted into false-vacuum regions by a later bulk transition, collapse into nearly monochromatic primordial black holes up to about 10^-5 solar masses.

  3. Supercooled Phase Transitions with Radiative Symmetry Breaking

    hep-ph 2026-02 unverdicted novelty 3.0 of 10

    Supercooled phase transitions from radiative symmetry breaking can be described, at leading and next-to-leading order, by formulas depending only on three or four parameters (χ0, β̄, g, and g̃ at NLO).

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