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- W4320858980 abstract "We study the power spectrum of the comoving curvature perturbation $cal R$ in the model that glues two linear potentials of different slopes, originally proposed by Starobinsky. We find that the enhanced power spectrum reaches its maximum at the wavenumber which is $pi$ times the junction scale. The peak is $sim2.61$ times larger than the ultraviolet plateau. We also show that its near-peak behavior can be well approximated by a constant-roll model, once we define the effective ultra-slow-roll $e$-folding number appropriately by considering the contribution from non-single-clock phase only. Such an abrupt transition to non-attractor phase can leave some interesting characteristic features in the energy spectrum of the scalar-induced gravitational waves, which are detectable in the space-borne interferometers if the primordial black holes generated at such a high peak are all the dark matter." @default.
- W4320858980 created "2023-02-16" @default.
- W4320858980 creator A5013244136 @default.
- W4320858980 creator A5026880066 @default.
- W4320858980 date "2022-09-28" @default.
- W4320858980 modified "2023-09-29" @default.
- W4320858980 title "Primordial Black Hole Formation in Starobinsky's Linear Potential Model" @default.
- W4320858980 doi "https://doi.org/10.48550/arxiv.2209.14183" @default.
- W4320858980 hasPublicationYear "2022" @default.
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