The Trispectrum in the Multi-brid Inflation

Abstract

The trispectrum is at least as important as the bispectrum and its size can be characterized by two parameters ${\tau }_{NL}$ and $g_{NL}$. In this short paper, we focus on the Multi-brid inflation, in particular the two-brid inflation model in arXiv.0805.0974, and find that ${\tau }_{NL}$ is always positive and roughly equals to $(\frac{6}{5}{f}_{NL}{)}^2$ for the low scale inflation, but $g_{NL}$ can be negative or positive and its order of magnitude can be the same as that of ${\tau }_{NL}$ or even larger

12 pages; minor correction, refs added; further refs added, version for publication in JCAP

References in corpus (50)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• A General Analytic Formula for the Spectral Index of the Density Perturbations produced during Inflation
• A general proof of the conservation of the curvature perturbation
• The inflationary prediction for primordial non-gaussianity
• Super-Horizon Scale Dynamics of Multi-Scalar Inflation
• Non-Gaussianity of the primordial perturbation in the curvaton model
• Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation
• Non-Gaussianity in the modulated reheating scenario
• Perturbations in generalized multi-field inflation
• Signatures of Initial State Modifications on Bispectrum Statistics
• Primordial trispectrum from inflation
• Angular Trispectrum of CMB Temperature Anisotropy from Primordial Non-Gaussianity with the Full Radiation Transfer Function
• Primordial fluctuations and non-Gaussianities in multi-field DBI inflation
• Non-Gaussianity, Spectral Index and Tensor Modes in Mixed Inflaton and Curvaton Models
• Multi-brid inflation and non-Gaussianity
• Conditions for large non-Gaussianity in two-field slow-roll inflation
• Inflation models and observation
• Signatures of Non-Gaussianity in the Curvaton Model
• Large non-Gaussianity from multi-brid inflation
• Non-gaussianity from the bispectrum in general multiple field inflation
• Curvaton with Polynomial Potential
• Large non-Gaussianity from two-component hybrid inflation
• Primordial Non-Gaussianities of General Multiple Field Inflation
• Non-Gaussianity from isocurvature perturbations
• 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
• Multifield DBI Inflation and Non-Gaussianities
• Curvaton Dynamics and the Non-Linearity Parameters in Curvaton Model
• Large Non-Gaussianity Implication for Curvaton Scenario
• Diagrammatic approach to non-Gaussianity from inflation
• A General Analysis of Non-Gaussianity from Isocurvature Perturbations
• The Curvature Perturbation in the Axion-type Curvaton Model
• Isocurvature, non-gaussianity and the curvaton model
• General Single Field Inflation with Large Positive Non-Gaussianity
• DBI-Curvaton
• Hilltop Non-Gaussianity
• Non-Gaussianity and Baryonic Isocurvature Fluctuations in the Curvaton Scenario
• Non-Gaussianity from Symmetry
• Non-Gaussianity from Baryon Asymmetry
• N-vaton
• Inflationary NonGaussianity from Thermal Fluctuations
• Consistency Relations for Non-Gaussianity
• Modulated Inflation
• Non-Gaussianity, Isocurvature Perturbation, Gravitational Waves and a No-Go Theorem for Isocurvaton
• Systematics of multi-field effects at the end of warped brane inflation
• Spectral Index in Curvaton Scenario
• Curvature and Entropy Perturbations in Generalized Gravity
• Non-standard kinetic term as a natural source of non-Gaussianity
• Reconstruction of the isocurvaton scenario

Cited by in corpus (36)

• Particle physics models of inflation and curvaton scenarios
• Non-Gaussianity beyond slow roll in multi-field inflation
• On the full trispectrum in single field DBI-inflation
• 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
• Non-Gaussianity in Two-Field Inflation
• A note on the role of the boundary terms for the non-Gaussianity in general k-inflation
• A geometric description of the non-Gaussianity generated at the end of multi-field inflation
• On the full quantum trispectrum in multi-field DBI inflation
• Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass
• Combined local and equilateral non-Gaussianities from multifield DBI inflation
• Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
• Scale Dependent Local Non-Gaussianity from Loops
• Primordial Non-Gaussianities from the Trispectra in Multiple Field Inflationary Models
• 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
• Strong scale dependent bispectrum in the Starobinsky model of inflation
• Issues on Generating Primordial Anisotropies at the End of Inflation
• Multi-Stream Inflation
• On Non-Gaussianities in Multi-Field Inflation (N fields): Bi- and Tri-spectra beyond Slow-Roll
• Trispectrum from Ghost Inflation
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• Note on Non-Gaussianities in Two-field Inflation
• The trispectrum in ghost inflation
• On Cross-correlations between Curvature and Isocurvature Perturbations during Inflation
• Non-Gaussianity from Lifshitz Scalar
• Loop Corrections to Cosmological Perturbations in Multi-field Inflationary Models
• Primordial curvature perturbation during and at the end of multi-field inflation
• Multi-fluid cosmology in Einstein gravity: analytical solutions
• The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
• Quadra-Spectrum and Quint-Spectrum from Inflation and Curvaton Models
• Curvaton and the inhomogeneous end of inflation
• New features in curvaton model
• On primordial trispectrum from exchanging scalar modes in general multiple field inflationary models
• Statistical nature of non-Gaussianity from cubic order primordial perturbations: CMB map simulations and genus statistic
• Primordial gravitational wave of BICEP2 from dynamical double hybrid inflation
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models