Abstract
Scalar metric fluctuations generically source a spectrum of gravitational waves at second order in perturbation theory, poising gravitational wave experiments as potentially powerful probes of the small-scale curvature power spectrum. We perform a detailed study of the imprint of primordial non-Gaussianity on these induced gravitational waves, emphasizing the role of both the disconnected and connected components of the primoridal trispectrum. Specializing to local-type non-Gaussianity, we numerically compute all contributions and present results for a variety of enhanced primordial curvature power spectra.
Original language | English (US) |
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Article number | 080 |
Journal | Journal of Cosmology and Astroparticle Physics |
Volume | 2021 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2021 |
Externally published | Yes |
Keywords
- cosmological perturbation theory
- gravitational waves / sources
- gravitational waves / theory
- primordial black holes
ASJC Scopus subject areas
- Astronomy and Astrophysics