Pith. sign in

REVIEW 6 cited by

Scalar induced gravitational waves in inflation with gravitationally enhanced friction

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1912.05927 v3 pith:O4OESSA3 submitted 2019-12-12 astro-ph.CO gr-qc

Chengjie Fu , Puxun Wu , Hongwei Yu This is my paper · ORCID
classification astro-ph.COgr-qc
keywords spectruminducedscalarcurvatureenhancedformfrictionfuture
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We study the scalar induced gravitational wave (GW) background in inflation with gravitationally enhanced friction (GEF). The GEF mechanism, which is realized by assuming a nonminimal derivative coupling between the inflaton field and gravity, is used to amplify the small-scale curvature perturbations to generate a sizable amount of primordial black holes. We find that the GW energy spectra can reach the detectable scopes of the future GW projects, and the power spectrum of curvature perturbations has a power-law form in the vicinity of the peak. The scaling of the GW spectrum in the ultraviolet regions is two times that of the power spectrum slope, and has a lower bound. In the infrared regions, the slope of the GW spectrum can be described roughly by a log-dependent form. These features of the GW spectrum may be used to check the GEF mechanism if the scalar induced GWs are detected in the future.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 6 Pith papers

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

  1. Spectrum of third-order tensor perturbations induced by excited scalar fields

    gr-qc 2025-01 conditional novelty 7.0 of 10

    For exponentially amplified scalar modes during inflation, the third-order gravitational wave spectrum grows faster than the one-loop spectrum and dominates before the signal becomes detectable, breaking perturbation theory.

  2. Superhorizon curvature perturbations in hybrid inflation revisited

    astro-ph.CO 2026-06 unverdicted novelty 6.0 of 10

    Hybrid inflation's waterfall tachyonic instability grows isocurvature modes that convert to curvature perturbations at the field-space turn, yielding a k^{3}-peaked spectrum with always-positive f_NL that enhances PBH...

  3. 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.

  4. Constraining inflation with nonminimal derivative coupling with the Parkes Pulsar Timing Array third data release

    gr-qc 2024-12 conditional novelty 6.0 of 10

    Using PPTA DR3 data, the authors report 90% constraints on the nonminimal derivative coupling inflation parameters φc, ωL, and σ, with Bayes factor 0.9 against a power-law background.

  5. One-loop corrections to infrared GWs is forbidden by symmetries

    gr-qc 2025-08 conditional novelty 5.0 of 10

    In non-attractor single-field inflation, one-loop corrections to superhorizon gravitational waves cancel, and a Ward identity explains why.

  6. Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation

    gr-qc 2026-02 conditional novelty 4.0 of 10

    A transient null-energy-condition violation during inflation is shown to produce a four-component gravitational-wave background — primordial, scalar-induced, PBH ringdown, and binary-merger — with only the solar-mass ...

Pith tools