Non-Gaussianity and the induced gravitational wave background
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| Format: | Preprint |
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2021
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| _version_ | 1866913996398919680 |
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| author | Adshead, Peter Lozanov, Kaloian D. Weiner, Zachary J. |
| author_facet | Adshead, Peter Lozanov, Kaloian D. Weiner, Zachary J. |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2105_01659 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Non-Gaussianity and the induced gravitational wave background Adshead, Peter Lozanov, Kaloian D. Weiner, Zachary J. Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology 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. |
| title | Non-Gaussianity and the induced gravitational wave background |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2105.01659 |