Cosmic 21-cm Fluctuations as a Probe of Fundamental Physics

Abstract

Fluctuations in high-redshift cosmic 21-cm radiation provide a new window for observing unconventional effects of high-energy physics in the primordial spectrum of density perturbations. In scenarios for which the initial state prior to inflation is modified at short distances, or for which deviations from scale invariance arise during the course of inflation, the cosmic 21-cm power spectrum can in principle provide more precise measurements of exotic effects on fundamentally different scales than corresponding observations of cosmic microwave background anisotropies.

arXiv comment8 pages, 2 figures

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Cited by in corpus (11)

• Possibility of Precise Measurement of the Cosmological Power Spectrum With a Dedicated 21cm Survey After Reionization
• The 21cm angular-power spectrum from the dark ages
• Cosmic Bubble Collisions
• Eternal Inflation, Bubble Collisions, and the Disintegration of the Persistence of Memory
• Polarizing Bubble Collisions
• Cosmic (super)string constraints from 21 cm radiation
• Analyzing Cosmic Bubble Collisions
• Thermal inflation and baryogenesis in heavy gravitino scenario
• Implications of non-analytical f(R) gravity at Solar-System scales
• Dark Matter Astrophysics
• Optimal analysis of azimuthal features in the CMB