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Burdening (or not) gravitational waves in the presence of primordial black holes

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arxiv 2509.02701 v1 pith:ICX5APYQ submitted 2025-09-02 hep-ph astro-ph.COgr-qc

Mathieu Gross , Md Riajul Haque , Yann Mambrini This is my paper
classification hep-phastro-ph.COgr-qc
keywords primordialblackfrequencygravitationalholesinflatonmodespresence
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abstract

We present the spectrum of primordial gravitational wave (GW) expected from the presence of primordial black holes (PBH) and inflaton in the early Universe. For the first time, we combine the waves produced by the PBH decay, with their density fluctuation counterpart, as well as their effects on the GW produced by the inflaton {\it after} (high frequency modes) and {\it before} (low frequency modes) the end of inflation. We generalize our study for a potential $V(\phi)\propto \phi^k$ during reheating. We also extend our study, taking into account a possible memory burden effect to see how it can affect the shape of the spectrum.

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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. Gravitational Waves from Black Hole Reheating: The Scalar-Induced Component

    hep-ph 2026-05 unverdicted novelty 7.0 of 10

    Accounting for the minimal mass spread of primordial black holes from gravitational collapse suppresses the Poltergeist GW background to the level of generic scalar-induced signals and reopens ultra-light PBH parameter space.

  2. Black Hole Memory Burden and its Signatures in Gravitational Waves from Mergers

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Swift memory burden shifts black-hole quasinormal-mode frequencies by an amount set by the memory-load parameter μ and critical exponent p, with μ able to exceed the progenitor's information content.

  3. Opening the Window of Ultra-Light PBHs by Exorcising the Poltergeist

    hep-ph 2026-05 unverdicted novelty 6.0 of 10

    Incorporating the general-relativity mass tail df_PBH/d ln M ∝ M^3.78 smooths PBH evaporation, suppresses the scalar-induced GW signal by orders of magnitude, and reopens the ultra-light PBH window for the hot Big Bang.

  4. Memory burden effect of regular primordial black holes

    astro-ph.CO 2026-05 unverdicted novelty 5.0 of 10

    Combining regular black hole metrics with memory burden suppresses evaporation and opens a 10^6-10^8 g PBH mass window that can comprise all dark matter.

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