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Hearing without seeing: gravitational waves from hot and cold hidden sectors

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arxiv 1901.11038 v2 pith:B6KM3FOY submitted 2019-01-30 hep-ph astro-ph.CO

Malcolm Fairbairn , Edward Hardy , Alastair Wickens This is my paper · ORCID
classification hep-phastro-ph.CO
keywords hiddensectorgravitationalcoldtransitionfrequencyvisiblewave
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We study the spectrum of gravitational waves produced by a first order phase transition in a hidden sector that is colder than the visible sector. In this scenario, bubbles of the hidden sector vacuum can be nucleated through either thermal fluctuations or quantum tunnelling. If a cold hidden sector undergoes a thermally induced transition, the amplitude of the gravitational wave signal produced will be suppressed and its peak frequency shifted compared to if the hidden and visible sector temperatures were equal. This could lead to signals in a frequency range that would otherwise be ruled out by constraints from big bang nucleosynthesis. Alternatively, a sufficiently cold hidden sector could fail to undergo a thermal transition and subsequently transition through the nucleation of bubbles by quantum tunnelling. In this case the bubble walls might accelerate with completely negligible friction. The resulting gravitational wave spectrum has a characteristic frequency dependence, which may allow such cold hidden sectors to be distinguished from models in which the hidden and visible sector temperatures are similar. We compare our results to the sensitivity of the future gravitational wave experimental programme.

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Cited by 4 Pith papers

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

  1. Gravitational Waves from Confinement in $SU(N)$ Yang-Mills Theory

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    For pure SU(N) Yang-Mills dark sectors, confinement transitions produce gravitational waves too weak for LISA, ET, CE, DECIGO or BBO, with peak amplitude at N≈20 and a large-N decay h²Ω_peak ∝ N^{-14/3}.

  2. Beyond the Daisy Chain: Running and the 3D EFT View of Supercooled Phase Transitions

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    With renormalisation-group running included, the one-loop high-temperature Daisy-resummed potential at µ=πT reproduces the phase-transition parameters of the two-loop dimensionally reduced EFT, while the no-running on...

  3. Can a secluded self-interacting dark sector generate detectable gravitational waves?

    hep-ph 2025-02 conditional novelty 4.0 of 10

    In a secluded self-interacting dark sector with a dark U(1)' and dark radiation, existing Neff and Lyman-alpha limits remove nearly all gravitational-wave-detectable parameter space; one charge assignment keeps a smal...

  4. Science of the LISA mission: A Summary for the European Strategy for Particle Physics

    gr-qc 2025-07 unverdicted novelty 1.0 of 10

    Four LISA science objectives are summarized for the European particle physics strategy, covering gravity tests, standard sirens, and TeV-scale stochastic gravitational wave backgrounds.

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