Higher order contributions to the primordial non-gaussianity

Abstract

In this paper we calculate additional contributions to that part of the non-Gaussianity of the curvature perturbation, which come from the three-point correlator of the field perturbations. We estimate this contribution in the following models for its origin: single-component inflation, multi-component chaotic inflation, a two-component "hybrid" inflationary model, and the curvaton scenario. In all of these models, the additional contributions to the primordial non-gaussianity considered here, are too small to be ever detected.

arXiv comment6 pages. 2 figures. Typos corrected. Version accepted in JCAP

References in corpus (21)

• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Generating the curvature perturbation without an inflaton
• A General Analytic Formula for the Spectral Index of the Density Perturbations produced during Inflation
• Effects of Cosmological Moduli Fields on Cosmic Microwave Background
• A general proof of the conservation of the curvature perturbation
• The primordial density perturbation in the curvaton scenario
• JaxoDraw: A graphical user interface for drawing Feynman diagrams
• Second-Order Cosmological Perturbations from Inflation
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• The inflationary prediction for primordial non-gaussianity
• Renormalized Cosmological Perturbation Theory
• Primordial non-gaussianities from multiple-field inflation
• Non-Gaussianity from Inflation
• Detecting a small perturbation through its non-Gaussianity
• Non-gaussianity from the second-order cosmological perturbation
• Non-Gaussian perturbations from multi-field inflation
• Non-Gaussian perturbations in hybrid inflation
• Gauge-invariant perturbations at second order: multiple scalar fields on large scales
• Simple route to non-Gaussianity in inflation
• A Bound Concerning Primordial Non-Gaussianity

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• Spectral Running and Non-Gaussianity from Slow-Roll Inflation in Generalised Two--Field Models
• The curvature perturbation in a box
• 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
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• One-loop graviton corrections to the curvature perturbation from inflation
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• Non-gaussianity for a Two Component Hybrid Model of Inflation
• Scale Dependent Local Non-Gaussianity from Loops
• Non-Gaussianities in Multifield Inflation: Superhorizon Evolution, Adiabaticity, and the Fate of fnl
• On the Issue of the ζSeries Convergence and Loop Corrections in the Generation of Observable Primordial Non-Gaussianity in Slow-Roll Inflation. Part II: the Trispectrum
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• Non-Gaussian corrections to the probability distribution of the curvature perturbation from inflation
• Adiabaticity and the Fate of Non-Gaussianities: The Trispectrum and Beyond
• Tachyon Mediated Non-Gaussianity
• On Non-Gaussianities in Two-Field Poly-Instanton Inflation
• 1/R Correction to Gravity in the Early Universe