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Low-frequency Gravitational Waves from Double-inflection-point Inflation

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arxiv 1907.05213 v1 pith:4RL4SKFH submitted 2019-07-11 astro-ph.CO gr-qchep-ph

classification astro-ph.COgr-qchep-ph
keywords gravitationalwavesdouble-inflection-pointinflationlargeperturbationspowerscalar
verification ladder T0 review T1 audit T2 compute T3 formal

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We study the production of gravitational waves from primordial scalar perturbations in double-inflection-point inflation, in which one of the inflection points predicts the power spectra consistent with CMB observations at large scales and the other generates a large peak in the power spectrum of scalar perturbations at small scales. We find that the reduced gravitational waves at low frequencies can be detected by future space-based laser interferometers.

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Forward citations

Cited by 4 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. Primordial Black Holes from Cosmic Domain Walls

    astro-ph.CO 2019-08 conditional novelty 6.0 of 10

    A two-field inflationary model with time-dependent domain wall tension produces primordial black holes with a narrow, spike-like mass function, potentially explaining all dark matter or LIGO merger events.

  4. 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.

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