Inflationary models inducing non-Gaussian metric fluctuations

Abstract

We construct explicit models of multi-field inflation in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gaussianity is first generated by a light scalar field and then transferred into curvature fluctuations. The probability distribution functions of the metric perturbation at the end of inflation are computed. This provides a guideline for designing strategies to search for non-Gaussian signals in future CMB and large scale structure surveys.

4 pages, 7 figures

References in corpus (2)

• The primordial density perturbation in the curvaton scenario
• Non-Gaussianity in multi-field inflation

Cited by in corpus (133)

• Non-Gaussianity from Inflation: Theory and Observations
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• Primordial Non-Gaussianities from Inflation Models
• Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
• Non-Gaussianities in two-field inflation
• Non-Gaussianities in models with a varying inflaton decay rate
• The Effective Field Theory of Multifield Inflation
• The shape of primordial non-Gaussianity and the CMB bispectrum
• Probing Primordial Non-Gaussianity with Large-Scale Structure
• Theory of cosmological perturbations in an anisotropic universe
• Primordial non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
• Testing for Non-Gaussianity in the Wilkinson Microwave Anisotropy Probe Data: Minkowski Functionals and the Length of the Skeleton
• Large-scale Bias and Efficient Generation of Initial Conditions for Non-Local Primordial Non-Gaussianity
• Review of local non-Gaussianity from multi-field inflation
• Predictions from an anisotropic inflationary era
• Primordial statistical anisotropy generated at the end of inflation
• Large non-Gaussianity in multiple-field inflation
• Primordial Bispectrum from Multifield Inflation with Nonminimal Couplings
• Non-gaussianity from the second-order cosmological perturbation
• Conditions for large non-Gaussianity in two-field slow-roll inflation
• Non-Gaussianity from Preheating
• A numerical study of non-gaussianity in the curvaton scenario
• Modulated fluctuations from hybrid inflation
• Non-Gaussianity beyond slow roll in multi-field inflation
• Large non-Gaussianity from multi-brid inflation
• Classical approximation to quantum cosmological correlations
• Quantitative bispectra from multifield inflation
• Large non-Gaussianity from two-component hybrid inflation
• The CDM isocurvature perturbation in the curvaton scenario
• On the full trispectrum in single field DBI-inflation
• Constraints on mode couplings and modulation of the CMB with WMAP data
• Primordial Non-Gaussianities of General Multiple Field Inflation
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum
• On the Issue of the ζSeries Convergence and Loop Corrections in the Generation of Observable Primordial Non-Gaussianity in Slow-Roll Inflation. Part I: the Bispectrum
• On Classification of Models of Large Local-Type Non-Gaussianity
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Trispectrum
• The cosmic microwave background bispectrum from the non-linear evolution of the cosmological perturbations
• Primordial Non-Gaussianity in the Cosmic Microwave Background
• The radiative transfer at second order: a full treatment of the Boltzmann equation with polarization
• Lectures on inflation and cosmological perturbations
• Non-Gaussianity in Two-Field Inflation
• Non-Gaussian perturbations from multi-field inflation
• Non-Gaussian perturbations in hybrid inflation
• Particle decay during inflation: self-decay of inflaton quantum fluctuations during slow roll
• Multiple Fields in Stochastic Inflation
• Non-Gaussianity of quantum fields during inflation
• Gauge-invariant perturbations at second order: multiple scalar fields on large scales
• Curvature perturbation from symmetry breaking the end of inflation
• Non-linear inflationary perturbations
• The hybrid inflation waterfall and the primordial curvature perturbation
• Generating the Curvature Perturbation at the End of Inflation in String Theory
• On the full quantum trispectrum in multi-field DBI inflation
• Cosmic microwave background bispectrum on small angular scales
• Preheating and the non-gaussianity of the curvature perturbation
• Simple route to non-Gaussianity in inflation
• Lorentz boost and non-Gaussianity in multi-field DBI-inflation
• On the conservation of second-order cosmological perturbations in a scalar field dominated universe
• Combined local and equilateral non-Gaussianities from multifield DBI inflation
• The Four-point Correlator in Multifield Inflation, the Operator Product Expansion and the Symmetries of de Sitter
• Few Electron Limit of n-type Metal Oxide Semiconductor Single Electron Transistors
• The Persistence of Large Scale Structures I: Primordial non-Gaussianity
• Gravitational waves generated by second order effects during inflation
• The Hunt for Primordial Interactions in the Large Scale Structures of the Universe
• Primordial non-Gaussianities after Planck 2015: an introductory review
• 3-point temperature anisotropies in WMAP: Limits on CMB non-Gaussianities and non-linearities
• Cosmological perturbations and the reionization epoch
• Non-Gaussianities in Multifield Inflation: Superhorizon Evolution, Adiabaticity, and the Fate of fnl
• Primordial Non-Gaussianities from the Trispectra in Multiple Field Inflationary Models
• Non-Gaussianity from resonant curvaton decay
• A not so short note on the Klein-Gordon equation at second order
• The Covariance of Squeezed Bispectrum Configurations
• Primordial non-Gaussianity: local curvature method and statistical significance of constraints on f_NL from WMAP data
• Use of delta N formalism - Difficulties in generating large local-type non-Gaussianity during inflation -
• Hunting high and low: Disentangling primordial and late-time non-Gaussianity with cosmic densities in spheres
• Path Integral for Inflationary Perturbations
• Trispectrum from Ghost Inflation
• On Non-Gaussianities in Multi-Field Inflation (N fields): Bi- and Tri-spectra beyond Slow-Roll
• Non-Gaussian corrections to the probability distribution of the curvature perturbation from inflation
• High order correlation functions for self interacting scalar field in de Sitter space
• The integrated bispectrum as a test of CMB non-Gaussianity: detection power and limits on f_NL with WMAP data
• Statistical Anisotropy and the Vector Curvaton Paradigm
• Gauge invariant Boltzmann equation and the fluid limit
• Modulated Inflation
• Non-Gaussianity in braneworld and tachyon inflation
• Note on Non-Gaussianities in Two-field Inflation
• Can Non-Gaussian Cosmological Models Explain the WMAP's High Optical Depth for Reionization?
• Non-Gaussianities in extended D-term inflation
• On second-order superhorizon perturbations in multifield inflationary models
• Can we detect Hot or Cold spots in the CMB with Minkowski Functionals?
• Manyfield Inflation in Random Potentials
• General analytic predictions of two-field inflation and perturbative reheating
• The structure of correlation functions in single field inflation
• Large trispectrum in two-field slow-roll inflation
• Density Perturbations from Modulated Decay of the Curvaton
• Inhomogeneous non-Gaussianity
• Detectable primordial non-gaussianities and gravitational waves in k-inflation
• Adiabaticity and the Fate of Non-Gaussianities: The Trispectrum and Beyond
• Precision characterisation of two-qubit Hamiltonians via entanglement mapping
• Non-Gaussianity from Lifshitz Scalar
• Probing the Early Universe with the CMB Scalar, Vector and Tensor Bispectrum
• Finite volume effects for non-Gaussian multi-field inflationary models
• Tachyon Mediated Non-Gaussianity
• Tilt and Running of Cosmological Observables in Generalized Single-Field Inflation
• Implications of Planck results for models with local type non-Gaussianity
• Spectator field models in light of spectral index after Planck
• Temporal enhancement of super-horizon curvature perturbations from decays of two curvatons and its cosmological consequences
• Complete Hamiltonian analysis of cosmological perturbations at all orders
• Multi-fluid cosmology in Einstein gravity: analytical solutions
• Analysing large scale structure: II. Testing for primordial non-Gaussianity in CMB maps using surrogates
• How the curvaton scenario, modulated reheating and an inhomogeneous end of inflation are related
• What Planck does not tell us about inflation
• Modulated inflation from kinetic term
• A weak lensing view on primordial non-Gaussianities
• Large Tensor-to-Scalar Ratio in Small-Field Inflation
• Particle Production during Inflation in Light of PLANCK
• Modulation of the waterfall by a gauge field
• Gravity and non-gravity mediated couplings in multiple-field inflation
• The Origin of the Large-Scale Structure in the Universe: Theoretical and Statistical Aspects
• Affleck-Dine baryogenesis with modulated reheating
• Radiative corrections to scalar masses in de Sitter space
• The Non-Gaussianity of Racetrack Inflation Models
• High-order 2MASS galaxy correlation functions: Probing the primordial density field and the linearity of galaxy bias
• Lecture notes on non-Gaussianity
• Supersymmetric hybrid inflation with a light scalar
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• The Classical and Quantum Inflaton: the Precise Inflationary Potential and Quantum Inflaton Decay after WMAP
• 'Constraint consistency' at all orders in Cosmological perturbation theory
• Hamiltonian formalism of cosmological perturbations and higher derivative theories
• The Size of Local Bispectrum and Trispectrum in a Non-Minimal Inflation
• Luttinger liquid in superlattice structures: atomic gases, quantum dots and the classical Ising chain
• The shape of high order correlation functions in CMB anisotropy maps
• Non-Gaussianity in Cosmology: from Inflation to the CMB