A Single Field Inflation Model with Large Local Non-Gaussianity

Abstract

A detection of large local form non-Gaussianity is considered to be able to rule out all single field inflation models. This statement is based on a single field consistency condition. Despite the awareness of some implicit assumptions in the derivation of this condition and the demonstration of corresponding examples that illustrate these caveats, to date there is still no explicit and self-consistent model which can serve as a counterexample to this statement. We present such a model in this Letter.

Minor revisions, new references added, EPL journal published version

References in corpus (7)

• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Primordial Non-Gaussianities from Inflation Models
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• Enhanced Non-Gaussianity from Excited Initial States
• Folded Resonant Non-Gaussianity in General Single Field Inflation
• Non-Gaussianity in a Matter Bounce
• Strong scale dependent bispectrum in the Starobinsky model of inflation

Cited by in corpus (113)

• Planck 2013 Results. XXIV. Constraints on primordial non-Gaussianity
• Features and New Physical Scales in Primordial Observables: Theory and Observation
• The Observed Squeezed Limit of Cosmological Three-Point Functions
• Primordial Black Holes from Inflation and non-Gaussianity
• Imprints of Primordial Non-Gaussianity on Gravitational Wave Spectrum
• Primordial Black Holes from Inflation and Quantum Diffusion
• Planck 2018 results. IX. Constraints on primordial non-Gaussianity
• Primordial Black Holes and Local Non-Gaussianity in Canonical Inflation
• Mechanisms for Primordial Black Hole Production in String Theory
• Inflation, Cosmic Perturbations and Non-Gaussianities
• Revisiting non-Gaussianity from non-attractor inflation models
• Building a Boostless Bootstrap for the Bispectrum
• Signatures of anisotropic sources in the squeezed-limit bispectrum of the cosmic microwave background
• Loop Corrections to Standard Model Fields in Inflation
• Quantum diffusion beyond slow-roll: implications for primordial black-hole production
• Imprints of Massive Primordial Fields on Large-Scale Structure
• In-in and $\delta N$ calculations of the bispectrum from non-attractor single-field inflation
• On Squeezed Limits in Single-Field Inflation - Part I
• Highly non-Gaussian tails and primordial black holes from single-field inflation
• Stochastic Ultra Slow Roll Inflation
• Inflationary tensor fossils in large-scale structure
• Slavnov-Taylor Identities for Primordial Perturbations
• Distinctive signatures of space-time diffeomorphism breaking in EFT of inflation
• Bootstrapping Multi-Field Inflation: non-Gaussianities from light scalars revisited
• Higher Spin Supersymmetry at the Cosmological Collider: Sculpting SUSY Rilles in the CMB
• Consistently violating the non-Gaussian consistency relation
• The Effective Field Theory of Inflation Models with Sharp Features
• One Small Step for an Inflaton, One Giant Leap for Inflation: a novel non-Gaussian tail and primordial black holes
• Soft Theorems For Shift-Symmetric Cosmologies
• δN Formalism in Anisotropic Inflation and Large Anisotropic Bispectrum and Trispectrum
• A generalized non-Gaussian consistency relation for single field inflation
• Primordial Non-Gaussianity $f_{\mathrm{NL}}$ and Anisotropies in Scalar-Induced Gravitational Waves
• Non-Gaussianity from Excited Initial Inflationary States
• Non-Gaussianity Consistency Relations, Initial States and Back-reaction
• Conformal Fermi Coordinates
• Hemispherical Asymmetry and Local non-Gaussianity: a Consistency Condition
• Asymmetric Sky from the Long Mode Modulations
• Features from the non-attractor beginning of inflation
• Primordial non-Gaussianity from ultra slow-roll Galileon inflation
• The Physical Squeezed Limit: Consistency Relations at Order q^2
• On the scalar consistency relation away from slow roll
• Primordial non-Gaussianities after Planck 2015: an introductory review
• Ultra slow-roll G-inflation
• Imprints of Oscillatory Bispectra on Galaxy Clustering
• Anisotropic Inflation with the non-Vacuum Initial State
• Probing The Early Universe Cosmology With NANOGrav: Possibilities and Limitations
• Primordial Non-Gaussianity
• Perturbative Reheating After Multiple-Field Inflation: The Impact on Primordial Observables
• Consistency conditions and primordial black holes in single field inflation
• Inflation and Alternatives with Blue Tensor Spectra
• Clustering Fossils in Solid Inflation
• Fossilized Gravitational Wave Relic and Primordial Clocks
• CMB Hemispherical Asymmetry: Long Mode Modulation and non-Gaussianity
• Generalized Slow Roll in the Unified Effective Field Theory of Inflation
• COSMOS-$e^{\prime }$- soft Higgsotic attractors
• Squeezed tensor non-Gaussianity in non-attractor inflation
• Multiple Soft Limits of Cosmological Correlation Functions
• A new mechanism to enhance primordial tensor fluctuations in single field inflation
• Highly asymmetric probability distribution from a finite-width upward step during inflation
• Systematics of Adiabatic Modes: Flat Universes
• The next non-Gaussianity frontier: what can a measurement with $\sigma (f_{\mathrm{NL}})\lesssim 1$ tell us about multifield inflation?
• Vanishing of local non-Gaussianity in canonical single field inflation
• Large fluctuations and Primordial Black Holes
• Manyfield Inflation in Random Potentials
• Large Scale Anisotropic Bias from Primordial non-Gaussianity
• Soft limits in holographic cosmology
• Non-Trivial Checks of Novel Consistency Relations
• The tensor bi-spectrum in a matter bounce
• Fluid Inflation
• Fluids, Superfluids and Supersolids: Dynamics and Cosmology of Self Gravitating Media
• Probing correlations of early magnetic fields using mu-distortion
• Uphill inflation
• Multiple Field Ultra Slow Roll Inflation: Primordial Black Holes From Straight Bulk And Distorted Boundary
• Effective Field Theory of non-Attractor Inflation
• A Consistency Relation for Single-Field Inflation with Power Spectrum Oscillations
• Stochastic non-attractor inflation
• Solid Soft Theorems
• Global adiabaticity and non-Gaussianity consistency condition
• Adiabaticity and gravity theory independent conservation laws for cosmological perturbations
• Why Must Primordial Non-Gaussianity Be Very Small?
• Correlating CMB Spectral Distortions with Temperature: what do we learn on Inflation?
• Cosmological Perturbations and the Weinberg Theorem
• CMB $\mu T$ cross-correlations as a probe of PBH scenarios
• Large gauge transformation, Soft theorem, and Infrared divergence in inflationary spacetime
• Production of non-gaussianities in a bouncing phase
• Removing the ISW-lensing bias from the local-form primordial non-Gaussianity estimation
• Mixed Graviton and Scalar Bispectra in the EFT of Inflation: Soft Limits and Boostless Bootstrap
• Extended $\delta N$ formalism: Nonspatially Flat Separate Universe Approach
• Bayesian evidence of the post-Planck curvaton
• Scale-dependent hemispherical asymmetry from general initial state during inflation
• Super cosmic variance from mode-coupling: A worked example
• Perturbative region on non-Gaussian parameter space in single-field inflation
• Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
• Spatial Curvature at the Sound Horizon
• Conservation of $\zeta$ with radiative corrections from heavy field
• Unifying attractor and non-attractor models of inflation under a single soft theorem
• Consistency relation and inflaton field redefinition in the delta N formalism
• Dynamical systems in perturbative scalar field cosmology
• Single-Field Inflation and the Local Ansatz: Distinguishability and Consistency
• Fundamental Physics and Cosmology with TianQin
• Exploring local fNL estimators based on the binned bispectrum
• The spatial gauge-dependence of single-field inflationary bispectra
• Non-Gaussianities and Primordial Black Holes
• Dip and non-linearity in the curvature perturbation from inflation with a transient non-slow-roll stage
• Suppression of scalar power on large scales and associated bispectra
• Influence of Unobservable Modes on Correlation Functions during Inflation
• A new parameter in attractor single-field inflation
• Adiabatic Duality: Duality of cosmological models with varying slow-roll parameter and sound speed
• Stochastic Inflation with Interacting Noises
• Tensor Adiabatic Modes and Consistency Relations with Primordial Axion-Gauge Fields
• Comprehensive analysis of dissipative effects in the induced gravitational waves
• Non-Gaussianity in D3-brane inflation
• Nonlinear Lattice Framework for Inflation: Bridging stochastic inflation and the $\delta N$ formalism