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Clustering of primordial black holes with non-Gaussian initial fluctuations

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arxiv 1906.04958 v2 pith:BFQY4GTM submitted 2019-06-12 astro-ph.CO gr-qchep-phhep-th

classification astro-ph.COgr-qchep-phhep-th
keywords primordialclusteringblackcorrelationfluctuationsfunctionholesinitial
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We formulate the two-point correlation function of primordial black holes (PBHs) at their formation time, based on the functional integration approach which has often been used in the context of halo clustering. We find that PBH clustering on super-Hubble scales could never be induced in the case where the initial primordial fluctuations are Gaussian, while it can be enhanced by the so-called local-type trispectrum (four-point correlation function) of the primordial curvature perturbations.

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Cited by 2 Pith papers

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

  1. The swallowed spike: the formation of light primordial black hole structures around heavy seeds

    astro-ph.CO 2026-06 unverdicted novelty 7.0 of 10

    No torque mechanism studied supplies enough angular momentum for the innermost light-PBH shells around a heavy seed, so the spike core is swallowed and far less dense than a WIMP spike.

  2. Little Red Dots from Small-Scale Primordial Black Hole Clustering

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Densely clustered 30-solar-mass primordial black holes can sequentially merge into ~10^6 solar-mass seeds by redshift 6, possibly explaining JWST little red dots, with high spin from tidal torques and a two-peak gravi...

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