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.

8 pages, 2 figures

References in corpus (7)

• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• The CMBR fluctuations from HI perturbations prior to reionization
• The Effects of Dark Matter Decay and Annihilation on the High-Redshift 21 cm Background
• Probing Primordial Magnetic Fields with the 21cm Fluctuations
• Cosmic 21-cm Delensing of Microwave Background Polarization and the Minimum Detectable Energy Scale of Inflation
• The Spin-Resolved Atomic Velocity Distribution and 21-cm Line Profile of Dark-Age Gas
• Measuring the Primordial Deuterium Abundance During the Cosmic Dark Ages

Cited by in corpus (5)

• 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
• Eternal Inflation, Bubble Collisions, and the Disintegration of the Persistence of Memory
• Implications of non-analytical f(R) gravity at Solar-System scales
• Dark Matter Astrophysics