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Inflation and the dwarf galaxy problem

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arxiv astro-ph/0009127 v1 pith:NV3BTLRC submitted 2000-09-08 astro-ph

Jun'ichi Yokoyama This is my paper
classification astro-ph
keywords galacticinflationobjectsabsenceaccountcontradictioncosmologicalcutoff
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Cosmological N-body simulations with scale-invariant initial perturbations show too many virialized objects of dwarf-galaxy masses in a typical galactic halo in contradiction to observation and stability of galactic discs. We present a model of double hybrid inflation which predicts density fluctuations with a small-scale cutoff to account for the absence of these objects in observations.

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Cited by 1 Pith paper

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  1. A lower bound on primordial power spectrum from halo substructure

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    Galactic halo substructure requires primordial curvature perturbations of amplitude ≳10^-9 at wavenumbers 10–30 Mpc^-1.

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