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Primordial black holes generated by the non-minimal spectator field

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arxiv 2212.03577 v2 pith:4N5TSZFS submitted 2022-12-07 astro-ph.CO gr-qchep-phhep-th

De-Shuang Meng , Chen Yuan , Qing-Guo Huang This is my paper · ORCID
classification astro-ph.COgr-qchep-phhep-th
keywords fieldperturbationspectatorblackcurvaturegeneratedholesnon-minimal
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abstract

In this paper, we propose a model in which a spectator field non-minimally couples to an inflaton field and the power spectrum of the perturbation of the spectator field at small scales is dramatically enhanced by the sharp feature in the form of non-minimal coupling. At or after the end of inflation, the perturbation of the spectator field is converted into curvature perturbation and leads to the formation of primordial black holes (PBHs). Furthermore, for example, we consider three phenomenological models for generating PBHs with mass function peaked at $\sim10^{-12}M_\odot$ and representing all the cold dark matter in our Universe and find that the scalar induced gravitational waves generated by the curvature perturbation can be detected by the future space-borne gravitational-wave detectors such as Taiji, TianQin and LISA.

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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. Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA

    astro-ph.CO 2025-01 conditional novelty 6.0 of 10

    LISA can reconstruct the primordial curvature power spectrum from scalar-induced gravitational waves, with percent-level precision near the peak and Bayesian tests separating SIGWs from other sources.

  2. Evolution of Linear Perturbations under Time-Dependent Hubble Friction I: SR-USR-SR Inflation

    gr-qc 2026-02 conditional novelty 5.0 of 10

    Analytic asymptotics show the dip in the SR-USR-SR curvature power spectrum comes from cancellation between two growing modes, not a constant-versus-growing cancellation.

  3. A complete analysis of inflation with piecewise quadratic potential

    astro-ph.CO 2024-12 conditional novelty 5.0 of 10

    A new parameter alpha governs the amplitude, slope, and dip of the curvature power spectrum in piecewise quadratic two-stage inflation, with maximum growth k^5(log k)^2.

  4. One-Loop Tensor Power Spectrum from a Non-Canonical Spectator Field during Inflation

    astro-ph.CO 2026-01 conditional novelty 4.0 of 10

    One-loop scalar-sourced tensor corrections in non-minimal spectator PBH models are O(1) for a Gaussian dip and up to 10^12 times the tree level for an oscillatory coupling.

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