Constraints on Single-Field Inflation from the BOSS Galaxy Survey

Abstract

Non-local primordial non-Gaussianity (NLPNG) is a smoking gun of interactions in single-field inflationary models, and can be written as a combination of the equilateral and orthogonal templates. We present the first constraints on these from the redshift-space galaxy power spectra and bispectra of the Baryon Oscillation Spectroscopic Survey (BOSS) data. These are the first such measurements independent of the cosmic microwave background fluctuations. We perform a consistent analysis that includes all necessary nonlinear corrections generated by NLPNG, and vary all relevant cosmological and nuisance parameters in a global fit to the data. Our conservative analysis yields joint limits on the amplitudes of the equilateral and orthogonal shapes, $f_{\mathrm{NL}}^{\mathrm{equil}}=940\pm 600$, $f_{\mathrm{NL}}^{\mathrm{ortho}}=-170\pm 170$ (both at 68\% CL). These can be used to derive constraints on coefficients of the effective single-field inflationary Lagrangian; in particular, we find that the sound speed of inflaton fluctuations has the bound $c_s\ge 0.013$ at 95\% CL. Fixing the quadratic galaxy bias and cosmological parameters, the constraints can be tightened to $f_{\mathrm{NL}}^{\mathrm{equil}}=260\pm 300$, $f_{\mathrm{NL}}^{\mathrm{ortho}}=-23\pm 120$ (68\% CL).

arXiv comment6+7 pages, 2+3 figures, 0+1 table, code available at github.com/Michalychforever/CLASS-PT, with custom MontePython likelihoods available at github.com/oliverphilcox/full_shape_likelihoods

References in corpus (70)

• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• Generating the curvature perturbation without an inflaton
• The Effective Field Theory of Inflation
• DBI in the Sky
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Adiabatic CMB perturbations in pre-big bang string cosmology
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• Large-Scale Galaxy Bias
• The primordial density perturbation in the curvaton scenario
• Nongaussian Isocurvature Perturbations from Inflation
• Cosmological Non-Linearities as an Effective Fluid
• The Effective Field Theory of Cosmological Large Scale Structures
• Ghost Inflation
• One percent determination of the primordial deuterium abundance
• A new mechanism for generating density perturbations from inflation
• Starting the Universe: Stable Violation of the Null Energy Condition and Non-standard Cosmologies
• The shape of non-Gaussianities
• The Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• Non-Gaussianities in Single Field Inflation and their Optimal Limits from the WMAP 5-year Data
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the BOSS Final Data Release
• Cosmology and the Bispectrum
• Non-Gaussianities in models with a varying inflaton decay rate
• The IR-resummed Effective Field Theory of Large Scale Structures
• The bispectrum of galaxies from high-redshift galaxy surveys: primordial non-Gaussianity and non-linear galaxy bias
• The Effective Field Theory of Multifield Inflation
• On the consistency relation of the 3-point function in single field inflation
• Equivalence Principle and the Baryon Acoustic Peak
• Non-linear perturbation theory extension of the Boltzmann code CLASS
• Combining Full-Shape and BAO Analyses of Galaxy Power Spectra: A 1.6% CMB-independent constraint on H0
• Fast Estimators for Redshift-Space Clustering
• Time-Sliced Perturbation Theory II: Baryon Acoustic Oscillations and Infrared Resummation
• Cosmological Perturbations From Inhomogeneous Reheating, Freeze-Out, and Mass Domination
• The Bispectrum: From Theory to Observations
• A new analysis of galaxy 2-point functions in the BOSS survey, including full-shape information and post-reconstruction BAO
• Review of local non-Gaussianity from multi-field inflation
• On the Renormalization of the Effective Field Theory of Large Scale Structures
• Blinded challenge for precision cosmology with large-scale structure: results from effective field theory for the redshift-space galaxy power spectrum
• Cosmological Parameters and Neutrino Masses from the Final Planck and Full-Shape BOSS Data
• The Bispectrum in the Effective Field Theory of Large Scale Structure
• Infrared Resummation for Biased Tracers in Redshift Space
• Signs of Analyticity in Single-Field Inflation
• Redshift-weighted constraints on primordial non-Gaussianity from the clustering of the eBOSS DR14 quasars in Fourier space
• Constraints on primordial non-Gaussianity from 800,000 photometric quasars
• Time-Sliced Perturbation Theory for Large Scale Structure I: General Formalism
• Halo Clustering with Non-Local Non-Gaussianity
• Galaxy Bias and Primordial Non-Gaussianity
• Cosmological Perturbation Theory Using the FFTLog: Formalism and Connection to QFT Loop Integrals
• The One-Loop Matter Bispectrum in the Effective Field Theory of Large Scale Structures
• Signature of Primordial Non-Gaussianity on Matter Power Spectrum
• 1-loop Perturbative Corrections to the Matter and Galaxy Bispectrum with non-Gaussian Initial Conditions
• Precision analysis of the redshift-space galaxy bispectrum
• Effective Theory of Large-Scale Structure with Primordial Non-Gaussianity
• Tilted Ghost Inflation
• Bias Loop Corrections to the Galaxy Bispectrum
• Primordial Non-Gaussianity from Biased Tracers: Likelihood Analysis of Real-Space Power Spectrum and Bispectrum
• Ekpyrotic Non-Gaussianity -- A Review
• On the Statistics of Biased Tracers in the Effective Field Theory of Large Scale Structures
• Testing one-loop galaxy bias: joint analysis of power spectrum and bispectrum
• Cosmological constraints without fingers of God
• Cosmology Without Windows: Quadratic Estimators for the Galaxy Power Spectrum
• Toward a robust inference method for the galaxy bispectrum: likelihood function and model selection
• Cosmology Without Window Functions: Cubic Estimators for the Galaxy Bispectrum
• Cosmological parameters from the likelihood analysis of the galaxy power spectrum and bispectrum in real space
• On the Symmetries of Cosmological Perturbations
• Galaxy bias from forward models: linear and second-order bias of IllustrisTNG galaxies
• Time-sliced perturbation theory with primordial non-Gaussianity and effects of large bulk flows on inflationary oscillating features
• The two-loop bispectrum of large-scale structure

Cited by in corpus (21)

• Constraints on Multi-Field Inflation from the BOSS Galaxy Survey
• The BOSS bispectrum analysis at one loop from the Effective Field Theory of Large-Scale Structure
• Can we actually constrain $f_{\mathrm{NL}}$ using the scale-dependent bias effect? An illustration of the impact of galaxy bias uncertainties using the BOSS DR12 galaxy power spectrum
• Parity violation in the scalar trispectrum: no-go theorems and yes-go examples
• Colliding Ghosts: Constraining Inflation with the Parity-Odd Galaxy Four-Point Function
• Constraints on modified gravity from the BOSS galaxy survey
• Limits on primordial non-Gaussianities from BOSS galaxy-clustering data
• Quijote-PNG: Simulations of primordial non-Gaussianity and the information content of the matter field power spectrum and bispectrum
• Cosmological inference from the EFTofLSS: the eBOSS QSO full-shape analysis
• Constraining Single-Field Inflation with MegaMapper
• Cosmological constraints from the power spectrum of eBOSS quasars
• The Halo Bispectrum Multipoles in Redshift Space
• Bispectrum-window convolution via Hankel transform
• Cosmological Information in Skew Spectra of Biased Tracers in Redshift Space
• Quijote-PNG: Quasi-maximum likelihood estimation of Primordial Non-Gaussianity in the non-linear dark matter density field
• Fisher Forecasts for Primordial non-Gaussianity from Persistent Homology
• Modal compression of the redshift-space galaxy bispectrum
• Inflationary Adler Conditions
• Quijote-PNG: Quasi-maximum likelihood estimation of Primordial Non-Gaussianity in the non-linear halo density field
• The halo 3-point correlation function: a methodological analysis
• Cosmology with the Redshift-Space Galaxy Bispectrum Monopole at One-Loop Order