New constraints on primordial features from the galaxy two-point correlation function

Abstract

Features in the primordial power spectrum represent the imprinted signal in the density perturbations of the physics and evolution of the early Universe. A measurement of such signals will represents the need to go beyond the minimal assumption made for the initial conditions of the cosmological perturbations. For the first time, we study different templates with undamped oscillations or a bump from the two-point correlation function measured from BOSS DR12 galaxies constraining the amplitude of the features to be at most a few percent. Constraints are competitive to the ones obtained with {\em Planck} DR3.

8 pages, 4 figures, 2 tables

References in corpus (9)

• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Observational systematics and baryon acoustic oscillations in the correlation function
• Folded Resonant Non-Gaussianity in General Single Field Inflation
• Cosmological Fluctuations from Infra-Red Cascading During Inflation
• Effects of particle production during inflation
• Models of the Primordial Standard Clock
• Wiggly Whipped Inflation
• One spectrum to cure them all: Signature from early Universe solves major anomalies and tensions in cosmology

Cited by in corpus (14)

• Euclid: The search for primordial features
• Back to the features: assessing the discriminating power of future CMB missions on inflationary models
• Testing scale-invariant inflation against cosmological data
• Primordial feature constraints from BOSS+eBOSS
• On the primordial origin of the smoothing excess in the $Planck$ temperature power spectrum in light of LSS data
• Understanding large scale CMB anomalies with the generalized non-minimal derivative coupling during inflation
• Improving Constraints on Inflation with CMB Delensing
• Investigating the Origin of CMB Large-Scale Features Using LiteBIRD and CMB-S4
• Knot reconstruction of the scalar primordial power spectrum with Planck, ACT, and SPT CMB data
• Refining the nonlinear modelling of primordial oscillatory features
• Global 21 cm signal: a promising probe of primordial features
• Bayesian inference methodology for Primordial Power Spectrum reconstructions from Large Scale Structure
• Particle production during inflation: constraints expected from redshifted 21 cm observations from the epoch of reionization
• J-PAS: forecast on the primordial power spectrum reconstruction