Acoustic Signatures in the Primary Microwave Background Bispectrum

Abstract

If the primordial fluctuations are non-Gaussian, then this non-Gaussianity will be apparent in the cosmic microwave background (CMB) sky. With their sensitive all-sky observation, MAP and Planck satellites should be able to detect weak non-Gaussianity in the CMB sky. On large angular scale, there is a simple relationship between the CMB temperature and the primordial curvature perturbation. On smaller scales; however, the radiation transfer function becomes more complex. In this paper, we present the angular bispectrum of the primary CMB anisotropy that uses the full transfer function. We find that the bispectrum has a series of acoustic peaks that change a sign, and a period of acoustic oscillations is twice as long as that of the angular power spectrum. Using a single non-linear coupling parameter to characterize the amplitude of the bispectrum, we estimate the expected signal-to-noise ratio for COBE, MAP, and Planck experiments. We find that the detection of the primary bispectrum by any kind of experiments should be problematic for the simple slow-roll inflationary scenarios. We compare the sensitivity of the primary bispectrum to the primary skewness and conclude that when we can compute the predicted form of the bispectrum, it becomes a ``matched filter'' for detecting the non-Gaussianity in the data, and much more powerful tool than the skewness. We also show that MAP and Planck can separate the primary bispectrum from various secondary bispectra on the basis of the shape difference. The primary CMB bispectrum is a test of the inflationary scenario, and also a probe of the non-linear physics in the very early universe.

Submitted to Physical Review D. (v1) letter version [4 pages, 3 figures]. (v2) full paper version including the primary skewness, secondary bispectra, and the foreground separation [17 pages, 5 figures]

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• CMB Bispectrum from Active Models of Structure Formation
• Genus Topology of the Cosmic Microwave Background from the WMAP 3-Year Data
• Seeking Inflation Fossils in the Cosmic Microwave Background
• The Matter Bispectrum in N-body Simulations with non-Gaussian Initial Conditions
• CMB lensing extraction and primordial non-Gaussianity
• An Estimator for statistical anisotropy from the CMB bispectrum
• Optimising primordial non-Gaussianity measurements from galaxy surveys
• Imprint of anisotropic primordial non-Gaussianity on halo intrinsic alignments in simulations
• Cosmic microwave background bispectrum of vector modes induced from primordial magnetic fields
• Non-Gaussianity from Axionic Curvaton
• The CMB Bispectrum, Trispectrum, non-Gaussianity, and the Cramer-Rao Bound
• Characterisation of the non-Gaussianity of radio and IR point-sources at CMB frequencies
• The degeneracy between primordial non-Gaussianity and foregrounds in 21cm intensity mapping experiments
• Mixed Non-Gaussianity from Axion-Gauge Field Dynamics
• Detecting higher spin fields through statistical anisotropy in the CMB bispectrum
• Probability of the most massive cluster under non-Gaussian initial conditions
• Highly asymmetric probability distribution from a finite-width upward step during inflation
• Baryon history and cosmic star formation in non-Gaussian cosmological models: numerical simulations
• Local primordial non-Gaussianity from the large-scale clustering of photometric DESI luminous red galaxies
• Long range correlation in cosmic microwave background radiation
• The squeezed matter bispectrum covariance with responses
• Baryon-CDM isocurvature galaxy bias with IllustrisTNG
• Quantifying the rareness of extreme galaxy clusters
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• Non-local bias in the halo bispectrum with primordial non-Gaussianity
• Could PBHs and secondary GWs have originated from squeezed initial states?
• Optimal constraint on g_NL from CMB
• Non-Gaussianity in braneworld and tachyon inflation
• Second order Boltzmann equation : gauge dependence and gauge invariance
• Non-Gaussianity of the Cosmic Infrared Background anisotropies I : Diagrammatic formalism and application to the angular bispectrum
• Hunting for Isocurvature Modes in the CMB non-Gaussianities
• Generating non-Gaussian maps with a given power spectrum and bispectrum
• Examining the consistency relations describing the three-point functions involving tensors
• Modulated curvaton decay
• Impact of polarisation on the intrinsic CMB bispectrum
• Cosmic Birefringence: Cross-Spectra and Cross-Bispectra with CMB Anisotropies
• First observational constraints on tensor non-Gaussianity sourced by primordial magnetic fields from cosmic microwave background
• The next non-Gaussianity frontier: what can a measurement with $\sigma (f_{\mathrm{NL}})\lesssim 1$ tell us about multifield inflation?
• Non-Gaussianity and Gravitational Waves from Quadratic and Self-interacting Curvaton
• The Power of Locality: Primordial Non-Gaussianity at the Map Level
• Non-gaussianity in the strong regime of warm inflation
• Fundamental limits on constraining primordial non-Gaussianity
• A Cosmic Microscope for the Preheating Era
• Extracting foreground-obscured $\mu$-distortion anisotropies to constrain primordial non-Gaussianity
• Large Local Non-Gaussianity from General Single-field Inflation
• Constraints on anisotropic primordial non-Gaussianity from intrinsic alignments of SDSS-III BOSS galaxies
• What Can We Learn by Combining the Skew Spectrum and the Power Spectrum?
• Observational Signatures of Gravitational Couplings in DBI Inflation
• Primordial trispectra and CMB spectral distortions
• Efficient diagrammatic computation method for higher order correlation functions of local type primordial curvature perturbations
• Large Scale Anisotropic Bias from Primordial non-Gaussianity
• Responses of Halo Occupation Distributions: a new ingredient in the halo model & the impact on galaxy bias
• Minimizing gravitational lensing contributions to the primordial bispectrum covariance
• Constraints on the non-linear coupling parameter fnl with the Archeops data
• Primordial Non-Gaussianity from G-inflation
• Non-Gaussianity, Isocurvature Perturbation, Gravitational Waves and a No-Go Theorem for Isocurvaton
• Spectral distortion anisotropies from single-field inflation
• SO(10) GUT in Four and Five Dimensions: A Review
• Systematics of multi-field effects at the end of warped brane inflation
• Probing Cosmic Origins with CO and [CII] Emission Lines
• Analysis of non-Gaussian CMB maps based on the N-pdf. Application to WMAP data
• SuperFaB: a fabulous code for Spherical Fourier-Bessel decomposition
• A Measurement of Primordial Non-Gaussianity Using WMAP 5-Year Temperature Skewness Power Spectrum
• EFTofLSS meets simulation-based inference: ${\sigma }_8$ from biased tracers
• General formula for the running of local fNL
• Primordial Non-Gaussianity Estimation using 21 cm Tomography from the Epoch of Reionization
• Non-Gaussianity constraints from Planck spectral distortion cross-correlations
• A Consistency Relation for Single-Field Inflation with Power Spectrum Oscillations
• Scale-dependent non-Gaussianity and the CMB Power Asymmetry
• The different varieties of the Suyama-Yamaguchi consistency relation and its violation as a signal of statistical inhomogeneity
• Detecting the power spectrum turnover with HI intensity mapping
• Generation of large-scale magnetic fields, non-Gaussianity, and primordial gravitational waves in inflationary cosmology
• Scalar perturbations from inflation in the presence of gauge fields
• Cosmic microwave background constraints on dark energy dynamics: analysis beyond the power spectrum
• The Cold Spot as a Large Void: Rees-Sciama effect on CMB Power Spectrum and Bispectrum
• Constraining the dark energy dynamics with the cosmic microwave background bispectrum
• Constraining Scale-Dependent Non-Gaussianity with Future Large-Scale Structure and the CMB
• Coupling parsec and gigaparsec scales: primordial non-Gaussianity with multi-tracer intensity mapping
• The effect of non-Gaussian curvature perturbations on the formation of primordial black holes
• Isocurvature perturbations in extra radiation
• Weak Lensing of the Primary CMB Bispectrum
• Probing primordial non-Gaussianity with the power spectrum and bispectrum of future 21cm intensity maps
• Non-Gaussianity from Self-Ordering Scalar Fields
• Response approach to the squeezed-limit bispectrum: application to the correlation of quasar and Lyman-$\alpha$ forest power spectrum
• CMB B-mode non-Gaussianity: optimal bispectrum estimator and Fisher forecasts
• Detectable primordial non-gaussianities and gravitational waves in k-inflation
• Light Fields during Inflation from BOSS and Future Galaxy Surveys
• Bispectra from two-field inflation using the long-wavelength formalism
• Unbiased Cosmological Parameter Estimation from Emission Line Surveys with Interlopers
• Why Must Primordial Non-Gaussianity Be Very Small?
• X-ray Cluster Constraints on Non-Gaussianity
• Non-Gaussian Mode Coupling and the Statistical Cosmological Principle
• The Effect of Local non-Gaussianity on the Matter Bispectrum at Small Scales
• Consistency Relation for multifield inflation scenario with all loop contributions
• A numerical study of the effects of primordial non-Gaussianities on weak lensing statistics
• Imprints of primordial non-Gaussianities in X-ray and SZ signals from galaxy clusters
• Boltzmann equation in de Sitter space
• Optimizing future experimental probes of inflation
• Impact of Uncertainties in the Cosmological Parameters on the Measurement of Primordial non-Gaussianity
• Forecasts on the contamination induced by unresolved point sources in primordial non-Gaussianity beyond Planck
• Adiabaticity and the Fate of Non-Gaussianities: The Trispectrum and Beyond
• BOOMERanG Constraints on Primordial Non-Gaussianity from Analytical Minkowski Functionals
• Parity Violating Non-Gaussianity from Axion-Gauge Field Dynamics
• Non-Gaussian isocurvature perturbations in dark radiation
• Numerical evaluation of the three-point scalar-tensor cross-correlations and the tensor bi-spectrum
• Taming assembly bias for primordial non-Gaussianity
• Constraints on Primordial non-Gaussianity from Future HI Intensity Mapping Experiments
• The bispectra of galactic CMB foregrounds and their impact on primordial non-Gaussianity estimation
• Large non-Gaussianity in non-minimal inflation
• Non-Gaussianity of secondary anisotropies from ACTPol and Planck
• PNG-UNITsims: Halo clustering response to primordial non-Gaussianities as a function of mass
• CosmoFlow: Python Package for Cosmological Correlators
• Anisotropies in Scalar-Induced Gravitational-Wave Background from Inflaton-Curvaton Mixed Scenario with Sound Speed Resonance
• Black hole formation and growth with non-Gaussian primordial density perturbations
• CMB constraints on running non-Gaussianity
• Trispectrum estimation in various models of equilateral type non-Gaussianity
• Non-Gaussianity from Lifshitz Scalar
• More on crinkles in the last scattering surface
• Anatomy of bispectra in general single-field inflation -- modal expansions
• Optimization of spectroscopic surveys for testing non-Gaussianity
• Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave anisotropy probe 7-year data
• Full-sky bispectrum in redshift space for 21cm intensity maps
• Improvement of energy-momentum tensor and non-Gaussianities in holographic cosmology
• Direct search for features in the primordial bispectrum
• STOLAS: STOchastic LAttice Simulation of cosmic inflation
• The local PNG bias of neutral Hydrogen, ${\mathrm{H}}_{\mathrm{I}}$
• The full CMB temperature bispectrum from single-field inflation
• Gravitational modulated reheating and non-Gaussianity in Supergravity R^2 inflation
• CMB $\mu T$ cross-correlations as a probe of PBH scenarios
• DBI Galileon in the Effective Field Theory of Inflation: Orthogonal non-Gaussianities and constraints from the Trispectrum
• Genus Topology and Cross-Correlation of BICEP2 and Planck 353 GHz B-Modes: Further Evidence Favoring Gravity Wave Detection
• The scale-dependent signature of primordial non-Gaussianity in the large-scale structure of cosmic reionization
• Local Features with Large Spiky non-Gaussianities during Inflation
• Non-Gaussian halo abundances in the excursion set approach with correlated steps
• Weak Lensing of the CMB: Power Spectrum Covariance
• Constraining Primordial Non-Gaussianities from the WMAP2 2-1 Cumulant Correlator Power Spectrum
• Probing the Early Universe with the CMB Scalar, Vector and Tensor Bispectrum
• Estimating the bispectrum of the Very Small Array data
• Perturbed Recombination from Dark Matter Annihilation
• Primordial Power Spectrum features and $f_{NL}$ constraints
• Squeezing $f_{\mathrm{NL}}$ out of the matter bispectrum with consistency relations
• The Mass Function of Void Groups as a Probe of the Primordial non-Gaussianity
• Geodesic "curve"-of-sight formulae for the cosmic microwave background: a unified treatment of redshift, time delay, and lensing
• Large Non-Gaussianity in Non-Minimally Coupled Derivative Inflation with Gauss-Bonnet Correction
• The scalar bi-spectrum during preheating in single field inflationary models
• Observational Viability of an Inflation Model with E-Model non-Minimal Derivative Coupling
• Testing models of inflation with CMB non-gaussianity
• Fermionic Isocurvature Perturbations
• Robust predictions for an oscillatory bispectrum in Planck 2015 data from transient reductions in the speed of sound of the inflaton
• Non-Gaussianity effects on the primordial black hole abundance for sharply-peaked primordial spectrum
• Finite volume effects for non-Gaussian multi-field inflationary models
• Cosmic Variance of the Spectral Index from Mode Coupling
• The Probability Distribution for Non-Gaussianity Estimators
• Maximum Entropy deconvolution of Primordial Power Spectrum
• General CMB bispectrum analysis using wavelets and separable modes
• Computation approach for CMB bispectrum from primordial magnetic fields
• The Poisson equation at second order in relativistic cosmology
• Skewness in CMB temperature fluctuations from curved cosmic (super-)strings
• Validating the Galaxy and Quasar Catalog-Level Blinding Scheme for the DESI 2024 analysis
• Biases on cosmological parameters by general relativity effects
• Non-Gaussianity in three fluid curvaton model
• Inertial mechanism: dynamical mass as a source of particle creation
• Future CMB ISW-Lensing bispectrum constraints on modified gravity in the Parameterized Post-Friedmann formalism
• Probing Primordial Non-Gaussianity with Weak Lensing Minkowski Functionals
• Observational constraints on assisted k-inflation
• Probing higher-spin fields from inflation with higher-order statistics of the CMB
• Mapping the large-angle deviation from Gaussianity in simulated CMB maps
• Production of non-gaussianities in a bouncing phase
• Removing the ISW-lensing bias from the local-form primordial non-Gaussianity estimation
• Statistical properties of the linear tidal shear
• δN versus covariant perturbative approach to non-Gaussianity outside the horizon in multifield inflation
• Non-Gaussianity as a signature of thermal initial condition of inflation
• Halo statistics in non-Gaussian cosmologies: the collapsed fraction, conditional mass function, and halo bias from the path-integral excursion set method
• Primordial Non-Gaussianity from a Joint Analysis of Cosmic Microwave Background Temperature and Polarization
• Primordial non-Gaussianity in noncanonical warm inflation
• The curvaton scenario in the MSSM and predictions for non-Gaussianity
• Constraining Primordial Non-Gaussianity with Moments of the Large Scale Density Field
• Halo assembly bias from a deep learning model of halo formation
• Probing primordial non-Gaussianity with 21 cm fluctuations from minihalos
• A Modal Approach to the Numerical Calculation of Primordial non-Gaussianities
• High-resolution CMB bispectrum estimator with flexible modal basis
• Primordial power spectrum features in phenomenological descriptions of inflation
• Squeezed primordial bispectrum from general vacuum state
• Primordial Non-Gaussianity and the Statistics of Weak Lensing and other Projected Density Fields
• Compensated Isocurvature Perturbations in the Galaxy Power Spectrum
• Foreground influence on primordial non-Gaussianity estimates: needlet analysis of WMAP 5-year data
• Constraining the bispectrum from bouncing cosmologies with Planck
• Statistics of general functions of a Gaussian field -application to non-Gaussianity from preheating-
• Cosmic Microwave Background Bispectrum from the Lensing--Rees-Sciama Correlation Reexamined: Effects of Non-linear Matter Clustering
• The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
• 3D cosmic shear: numerical challenges, 3D lensing random fields generation and Minkowski Functionals for cosmological inference
• Testing Gaussianity on Archeops Data
• The effects on CMB power spectra and bispectra from the polarization rotation and its correlations with temperature and E-polarization
• Constraining the WMAP9 bispectrum and trispectrum with needlets
• Observing relativistic features in large-scale structure surveys -- I: Multipoles of the power spectrum
• Anisotropic CMB distortions from non-Gaussian isocurvature perturbations
• Trispectrum versus Bispectrum in Single-Field Inflation
• Effect of primordial non-Gaussianities on the far-UV luminosity function of high-redshift galaxies: implications for cosmic reionization
• Long wavelength limit of evolution of nonlinear cosmological perturbations
• Curvaton reheating in a Scale Invariant Two Measures Theory
• Primordial non-Gaussianity in warm inflation using $\delta N$ formalism
• CMB bounds on tensor-scalar-scalar inflationary correlations
• From CFT Spectra to CMB Multipoles in Quantum Gravity Cosmology
• Multipoint correlators in multifield cosmology
• How Gaussian can the Sky be? Primordial Non-Gaussianity from Quantum Information
• Application of cross correlations between CMB and large scale structure to constraints on the primordial non-Gaussianity
• Extended $\delta N$ formalism: Nonspatially Flat Separate Universe Approach
• Angular bispectrum and trispectrum of scalar-induced gravitational waves: all contributions from primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$
• Goodness-of-Fit Tests to study the Gaussianity of the MAXIMA data
• Probing the primordial Universe with 21-cm line from cosmic dawn/epoch of reionization
• Needatool: A Needlet Analysis Tool for Cosmological Data Processing
• Measuring the Energy Scale of Inflation with Large Scale Structures
• Curvatons in Warped Throats
• On the optimality of the spherical Mexican hat wavelet estimator for the primordial non-Gaussianity
• The Irrelevance of Primordial Black Hole Clustering in the LVK mass range
• CMB B-mode auto-bispectrum produced by primordial gravitational waves
• The nature of non-Gaussianity and statistical isotropy of the 408 MHz Haslam synchrotron map
• Nonlinear superhorizon perturbations of non-canonical scalar field
• Constraining primordial non-Gaussianity with CMB-21cm cross-correlations?
• Influence of Reheating on the Trispectrum and its Scale Dependence
• Extended analysis of CMB constraints on non-Gaussianity in isocurvature perturbations
• Effect of damped oscillations in the inflationary potential
• Chain Inflation Reconsidered
• Non-Gaussian Shape Recognition
• The empirical process on Gaussian spherical harmonics
• Non-Gaussian CMB and LSS statistics beyond polyspectra
• Nonlinear curvature perturbations in an exactly soluble model of multi-component slow-roll inflation
• Primordial non-Guassianity in inflation with gravitationally enhanced friction
• Cosmology with the Square Kilometre Array by SKA-Japan
• Inflation and Dark Energy from spectroscopy at $z>2$
• Wigner-Eckart theorem in cosmology: Bispectra for total-angular-momentum waves
• Reduced bispectrum seeded by helical primordial magnetic fields
• Non-Gaussian signatures of general inflationary trajectories
• Statistical analysis of undetected point sources in cosmic microwave background maps
• Impact of the 1/f noise and the asymmetric beam on non-Gaussianity searches with Planck
• Testing inflationary consistency relations by the potential CMB observations
• Non-Gaussianity of diffuse Galactic synchrotron emission at 408 MHz
• Multi-variate joint PDF for non-Gaussianities: exact formulation and generic approximations
• Wilkinson Microwave Anisotropy Probe 7-yr constraints on fNL with a fast wavelet estimator
• Non-Gaussianity from false vacuum inflation: Old curvaton scenario
• Non-Gaussian Shape Discrimination with Spectroscopic Galaxy Surveys
• Modulated inflation from kinetic term
• Adiabatic versus Isocurvature Non--Gaussianity
• Nonlinear Evolutions and Non-Gaussianity in Generalized Gravity
• The halo squeezed-limit bispectrum with primordial non-Gaussianity: a power spectrum response approach
• Neutrino winds on the sky
• Biases to primordial non-Gaussianity measurements from CMB secondary anisotropies
• Thermal non-Gaussianity in holographic cosmology
• Non-Gaussian Signatures from the Postinflationary Early Universe
• Cosmology in nonlocal gravity
• The 21cm Power Spectrum and the Shapes of Non-Gaussianity
• Non-Gaussian bubbles in the sky
• Constraints on primordial non-Gaussianity from the cross-correlation of DESI Luminous Red Galaxies and $Planck$ CMB lensing
• Statistics of a single sky: constrained random fields and the imprint of Bardeen potentials on galaxy clustering
• The effect of the linear term on the wavelet estimator of primordial non-Gaussianity
• Scale-dependent bias from the primordial non-Gaussianity with a Gaussian-squared field
• Symmetry of the CMB sky as a new test of its statistical isotropy. Non Cosmological Octupole?
• Probing local non-Gaussianities within a Bayesian framework
• Extension of local-type inequality for the higher order correlation functions
• Modification of the halo mass function by kurtosis associated with primordial non-Gaussianity
• The full-sky Spherical Fourier-Bessel power spectrum in general relativity
• Constraints on primordial non-Gaussianity from WMAP7 and Luminous Red Galaxies power spectrum and forecast for future surveys
• Leverage on small-scale primordial non-Gaussianity through cross-correlations between CMB $E$-mode and $\mu$-distortion anisotropies
• Scale Dependence of the Halo Bias in General Local-Type Non-Gaussian Models I: Analytical Predictions and Consistency Relations
• Joint Minkowski Functionals and Bispectrum Constraints on Non-Gaussianity in the CMB
• Primordial non-Gaussianity with Angular correlation function: Integral constraint and validation for DES
• Momentum dependence of the bispectrum in two-field inflation
• Biased cosmological parameter estimation with galaxy cluster counts in the presence of primordial non-Gaussianities
• Natural Hybrid Inflation Model with Large Non-Gaussianity
• The Renormalization Group for Large-Scale Structure: Primordial non-Gaussianities
• Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves
• Gravitationally induced particle production and its impact on structure formation
• Probing small-scale non-Gaussianity from anisotropies in acoustic reheating
• Consistency relation and inflaton field redefinition in the delta N formalism
• Gaussianity of the CMB: Smooth Goodness of Fit Tests Applied to Interferometric Data
• fNL - gNL mixing in the matter density field at higher orders
• Isotropic non-Gaussian $g_{\mathrm{NL}}$-like toy models that reproduce the cosmic microwave background anomalies
• Stochastic Inflation and Dimensional Reduction
• Constraints on primordial non-Gaussianity from Galaxy-CMB lensing cross-correlation
• Radio-optical synergies at high redshift to constrain primordial non-Gaussianity
• Normalizing flows for random fields in cosmology
• An improved estimator for non-Gaussianity in cosmic microwave background observations
• Validating galaxy clustering models with Fixed & Paired and Matched-ICs simulations: application to Primordial Non-Gaussianities
• Non-Gaussianity in Island Cosmology
• The integrated angular bispectrum
• Local Scale-Dependent Non-Gaussian Curvature Perturbations at Cubic Order
• The CIB-lensing bispectrum: impact on primordial non-Gaussianity and detectability for the Planck mission
• Exact Modeling of Power Spectrum Multipole through Spherical Fourier-Bessel Basis
• Statistics of the excursion sets in models with local primordial non-Gaussianity
• The Origin of the Large-Scale Structure in the Universe: Theoretical and Statistical Aspects
• Non-Gaussianities in the Extended EFT of Inflation
• Cosmic shear statistics in cosmologies with non-Gaussian initial conditions
• The effect of primordial non-Gaussianity on the skeleton of cosmic shear maps
• Suppressed Non-Gaussianity in the Curvaton Model
• The HalfDome Multi-Survey Cosmological Simulations: N-body Simulations
• Island Cosmology in the Landscape
• Constraining primordial non-Gaussianity with cosmological weak lensing: shear and flexion
• A general proof of the equivalence between the δN and covariant formalisms
• Removing Interlopers From Intensity Mapping Probes Of Primordial Non-Gaussianity
• Constraints on Non-Gaussianity from Sunyaev--Zeldovich Cluster Surveys
• The primordial information content of Rayleigh Anisotropies
• Scalar quantities as detectors of non-Gaussianity on CMB maps
• Testing primordial non-Gaussianities on galactic scales at high redshift
• Cuscuton Bounce Beyond the Linear Regime: Bispectrum and Strong Coupling Constraints
• Scale-dependent bias due to primordial vector fields
• Accurate estimation of angular power spectra for maps with correlated masks
• On the Cosmological Frame Problem
• More on loops in reheating: Non-gaussianities and tensor power spectrum
• Impact of Instrumental Systematics on the CMB Bispectrum
• Liberating the Inflaton from Primordial Spectrum Constraints
• Physics of non-Gaussian fields and the cosmological genus statistic
• 1/R Correction to Gravity in the Early Universe
• Generating cosmological perturbations with mass variations
• Probing vector chirality in the early Universe
• Primordial black holes and scalar induced gravitational waves from Higgs inflation with non-canonical kinetic term
• Relics of spatial curvature in the primordial non-gaussianity
• The primordial non-Gaussianity of local type (f_NL) in the WMAP 5-year data: the length distribution of CMB skeleton
• Stochastic Inflation and Replica Field Theory
• Halo/Galaxy Bispectrum with Equilateral-type Primordial Trispectrum
• Model-Independent Signatures of New Physics in non-Gaussianity
• Non-Gaussianities in generalized non-local $R^2$-like inflation
• Non-Gaussianity in the Cosmic Microwave Background Induced by Dipolar Dark Matter
• Non-Gaussianity and CMB aberration and Doppler
• Non-Gaussian assembly bias from a semi-analytic galaxy formation model
• Ionized bubble number count as a probe of non-Gaussianity
• A new signature of primordial non-Gaussianities from the abundance of galaxy clusters
• Lecture notes on non-Gaussianity
• Principal Components of CMB non-Gaussianity
• Conditions for the Absence of Infrared Sensitivity in Cosmological Probes in Any Gravity Theories
• On non-linear CMB temperature anisotropy from gravitational perturbations
• Non-Gaussianities and Primordial Black Holes
• Joint constraints on galaxy bias and ${\sigma }_8$ through the N-pdf of the galaxy number density
• Constraints on primordial non-Gaussianity using multitracer technique for skew spectrum
• Non-Gaussianity in String Cosmology: A Case Study
• Constraining Modified Gravity with Large non-Gaussianities
• Estimation of imprints of the bounce in loop quantum cosmology on the bispectra of cosmic microwave background
• Fast and precise way to calculate the posterior for the local non-Gaussianity parameter $f_{\text{nl}}$ from cosmic microwave background observations
• Reconstruction of the isocurvaton scenario
• Primordial Non-Gaussianity from LAMOST Surveys
• Abundance of peaks and dips in three-dimensional mass and halo density fields: a test for cosmology
• Manifestly gauge invariant theory of the nonlinear cosmological perturbations in the leading order of the gradient expansion
• Incompatibility of Standard Galaxy Bias Models in General Relativity
• High Energy Physics and Cosmology at the Unification Frontier: Opportunities and Challenges in the coming years
• Supersymmetric Dirac-Born-Infeld Axionic Inflation and Non-Gaussianity
• CMB Fluctuations and String Compactification Scales
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• Non-Gaussian signatures of Tachyacoustic Cosmology
• Constraining $f_{NL}$ using the Large-Scale Modulation of Small-Scale Statistics
• Orthogonal non-Gaussianity in DBI Galileon: prospect for Planck polarisation and post-Planck experiments
• Dip and non-linearity in the curvature perturbation from inflation with a transient non-slow-roll stage
• Constraints on fNL from Wilkinson Microwave Anisotropy Probe 7-year data using a neural network classifier
• Primordial non-Gaussianities produced by features in the potential of single slow-roll inflationary models
• Hydrodynamical chemistry simulations of the SZ effect and the impacts from primordial non-Gaussianities
• All-sky reconstruction of the primordial scalar potential from WMAP temperature data
• Effects of boosting on extragalactic components: methods and statistical studies
• The primordial non-Gaussianities for non-singular Horndeski cosmologies
• Separating Angular and Radial Modes with Spherical-Fourier Bessel Power Spectrum on All Scales and Implications for Systematics Mitigation
• Characterizing the spatial pattern of solar supergranulation using the bispectrum
• Primordial non-Gaussianity estimator: the inhomogeneous noise effect
• Constraints on primordial non-Gaussianity from Planck PR4 data
• Linear Relativistic Corrections in the Spherical Fourier-Bessel Power Spectrum
• Topological Echoes of Primordial Physics in the Universe at Large Scales
• Neural Network Reconstruction of Non-Gaussian Initial Conditions from Dark Matter Halos
• Numerical evaluation of the tensor bispectrum in two field inflation
• The scalar-scalar-tensor inflationary three-point function in the axion monodromy model
• Pair Counting without Binning -- A New Approach to Correlation Functions in Clustering Statistics
• Constraints on the three-fluid model of curvaton decay
• The Size of Local Bispectrum and Trispectrum in a Non-Minimal Inflation
• Squeezing information from radio surveys to probe the primordial Universe
• Inflationary tensor fossils deformed by solid matter -- scalar field interaction
• Constraining primordial non-Gaussianity from the large scale structure two-point and three-point correlation functions
• Canny Algorithm: A New Estimator for Primordial Non-Gaussianities
• Possible origin of CMB temperature fluctuations: Vacuum fluctuations of Kaluza-Klein and string states during inflationary era
• Consistency Relation and Non-Gaussianity in a Galileon Inflation
• Modelling non-Gaussianity from foreground contaminants
• Correlation of isocurvature perturbation and non-Gaussianity
• The Quantum Origin of Cosmic Structure
• CMB two- and three-point correlation functions from Alfvén waves
• Curvature perturbations from preheating with scale dependence
• Multipoles of the galaxy bispectrum on a light cone: wide-separation and relativistic corrections
• Measuring CMB non-Gaussianity as a probe of Inflation and Cosmic Strings
• Curvature perturbations from vacuum transition during inflation
• Generalized local ansatz for scale-dependent primordial non-Gaussianities and future galaxy surveys
• Dipolar Dark Matter and Cosmology
• Testing a Two Field Inflation Beyond the Slow-Roll Approximation
• The shape of high order correlation functions in CMB anisotropy maps
• Oscillations in the bispectrum
• O-V-S-Z and friends: Non-Gaussianity from inhomogeneous reionization
• Constraining primordial non-Gaussianity using Neural Networks
• Probing Dark Matter Isocurvature with Primordial Non-Gaussianity
• Precision calculation of the EFT likelihood with primordial non-Gaussianities
• $\delta N$ formalism with gradient interactions
• Infrared Sensitivity of Cosmological Probes in Horndeski Theory
• On the four-dimensional effective theories in brane-worlds
• Primordial non-Gaussianity systematics from redshift mismatch with SPHEREx
• An Optimal In-Situ Multipole Algorithm for the Isotropic Three-Point Correlation Functions
• Weakly Broken Galileon Symmetry in Cosmology
• On the detection of point sources in Planck LFI 70 GHz CMB maps based on cleaned K-map
• Beyond the two-point correlation: constraining primordial non-gaussianity with density perturbation moments
• Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of PLANCK 2015 Data
• Quijote PNG: The information content of the halo power spectrum and bispectrum
• Non-Gaussianity in the Squeezed Three-Point Correlation from the Relativistic Effects
• Construction and applications of the manifestly gauge invariant expressions of the solutions of the cosmological perturbation theory
• Primordial gravitational waves from excited states
• Non-Gaussianity in Cosmology: from Inflation to the CMB
• Unclustered tracers remain unclustered: the lack of primordial non-Gaussianity response of bias-zero tracers
• Searching for Unparticles with the Cosmic Microwave Background
• Effects of Radiation on Primordial Non-Gaussianity
• Enhancing Bispectrum Estimators for Galaxy Redshift Surveys with Velocities
• Non-Gaussianity from explicit $U(1)$-breaking interactions
• Towards detecting Primordial non-Gaussianity in the CMB using Spherical Convolutional Neural Networks
• A revisited Correction to the Halo Mass Function for local-type Primordial non-Gaussianity
• Probing CMB Polarization Gaussianity with the Statistics of Unpolarized Points: Non-Gaussianity of Planck Data and Prospects for Future B-Mode Measurements
• Minimal gauge inflation
• The Effects of Primordial Non-Gaussianity on Giant-Arc Statistics: A Scale Dependent Example