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Structure Formation with Two Periods of Inflation: Beyond PLaIn ΛCDM
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Structure Formation with Two Periods of Inflation: Beyond PLaIn ΛCDM
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We discuss structure formation in models with a spectator field in small-field inflation which accommodate a secondary period of inflation. In such models, subgalactic scale primordial fluctuations can be much suppressed in comparison to the usual power-law $\Lambda$CDM model while the large scale fluctuations remain consistent with current observations. We discuss how a secondary inflationary epoch may give rise to observable features in the small scale power spectrum and hence be tested by the structures in the Local Universe.
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Cited by 1 Pith paper
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A lower bound on primordial power spectrum from halo substructure
Galactic halo substructure requires primordial curvature perturbations of amplitude ≳10^-9 at wavenumbers 10–30 Mpc^-1.
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