Precise Measurements of Primordial Power Spectrum with 21 cm Fluctuations
arXiv:1303.1688 · doi:10.1088/1475-7516/2013/10/065
Abstract
We discuss the issue of how precisely we can measure the primordial power spectrum by using future observations of 21 cm fluctuations and cosmic microwave background (CMB). For this purpose, we investigate projected constraints on the quantities characterizing primordial power spectrum: the spectral index n_s, its running alpha_s and even its higher order running beta_s. We show that future 21 cm observations in combinations with CMB would accurately measure above mentioned observables of primordial power spectrum. We also discuss its implications to some explicit inflationary models.
26 pages and 7 figures, delta alpha for k_ref = 0.05 /Mpc in Table 5 corrected (v2)
References in corpus (20)
- Planck 2013 results. XVI. Cosmological parameters
- Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
- Report of the Dark Energy Task Force
- The morphology of HII regions during reionization
- CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
- How accurately can 21 cm tomography constrain cosmology?
- Studying Reionization with Ly-alpha Emitters
- Primordial Curvature Fluctuation and Its Non-Gaussianity in Models with Modulated Reheating
- Probing String Theory with Modulated Cosmological Fluctuations
- Non-Gaussianity, Spectral Index and Tensor Modes in Mixed Inflaton and Curvaton Models
- Curvature and isocurvature perturbations from two-field inflation in a slow-roll expansion
- Observable Spectra of Induced Gravitational Waves from Inflation
- More hilltop inflation models
- Black hole formation and slow-roll inflation
- Generating Primordial Black Holes Via Hilltop-Type Inflation Models
- Primordial Non-Gaussianity and the NRAO VLA Sky Survey
- On what scale should inflationary observables be constrained?
- Scalar runnings and a test of slow roll from CMB distortions
- Hilltop Supernatural Inflation and Gravitino Problem
- Running of Running of the Spectral Index and WMAP Three-year data
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- Nonminimally Assisted Inflation: A General Analysis
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- Elucidating Dark Energy with Future 21 cm Observations at the Epoch of Reionization
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- Inflation in Symmergent Metric-Palatini Gravity
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