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Primordial Black Hole and Gravitational Wave by Peaked Cosmic Perturbations from Axion Curvaton

Harigaya, Keisuke et al.
arXiv (All) · Papers
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cosmology-and-nongalactic-astrophysicshigh-energy-physics-phenomenology
We demonstrate that an axion field can develop perturbations peaked at an intermediate wavenumber through its inflationary dynamics. We compute the resultant spectrum of gravitational waves (GWs) and primordial black holes (PBHs) generated through the curvaton mechanism. The GW spectrum exhibits a t
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