Searching for primordial features with radio surveys: synergy between the power spectrum and bispectrum

arXiv:2606.28172 · astro-ph.CO · Submitted 2026-06-26 · Read on arXiv

Dionysios Karagiannis, Mario Ballardini, Roy Maartens

astro-ph.CO

Submitted: 2026-06-26

Comments: 35 pages, 12 figures, submitted to JCAP

Code: https://github.com/dhanson/quicklens

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Bispectrum — 154× in this paper · explained in 3 episodes
• Non-Gaussianity — 24× in this paper · explained in 2 episodes
• Primordial non-Gaussianity — 14× in this paper · explained in 2 episodes
• Clustering — 11× in this paper · explained in 2 episodes
• Frequency Dependence — 6× in this paper · explained in 2 episodes
• Matter Power Spectrum — 5× in this paper · explained in 2 episodes
• Calibration — 3× in this paper · explained in 7 episodes
• Alignment — 2× in this paper · explained in 1 episode
• Anisotropy — 2× in this paper · explained in 3 episodes
• Simons Observatory — 2× in this paper
• Velocity Dispersion — 2× in this paper · explained in 2 episodes
• Abundance — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Anisotropic Distortions — 1× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes
• N-body simulations — 1× in this paper · explained in 2 episodes
• Quantum fluctuations — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes
• Trace — 1× in this paper · explained in 2 episodes
• Wilkinson Microwave Anisotropy Probe — 1× in this paper

Sources

• Inflation: Theory and Observations
• Planck 2018 results. VI. Cosmological parameters
• Planck 2018 results. X. Constraints on inflation
• Planck 2018 results. IX. Constraints on primordial non-Gaussianity
• Features and New Physical Scales in Primordial Observables: Theory and Observation
• WMAP 7 Constraints on Oscillations in the Primordial Power Spectrum
• Oscillations in the CMB from Axion Monodromy Inflation
• Oscillations in the inflaton potential: Complete numerical treatment and comparison with the recent and forthcoming CMB datasets
• Searching for Standard Clocks in the Primordial Universe
• Constraining Monodromy Inflation
• Planck 2013 results. XXII. Constraints on inflation
• Planck 2013 Results. XXIV. Constraints on primordial non-Gaussianity
• Searching for Oscillations in the Primordial Power Spectrum: Constraints from Planck (Paper II)
• Updating constraints on inflationary features in the primordial power spectrum with the Planck data
• Inflationary Steps in the Planck Data
• Planck Constraints on Monodromy Inflation
• Standard Clock in Primordial Density Perturbations and Cosmic Microwave Background
• Inflation with moderately sharp features in the speed of sound: GSR and in-in formalism for power spectrum and bispectrum
• Wiggly Whipped Inflation
• Primordial power spectrum from Planck

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