The trispectrum in ghost inflation

Abstract

We calculate the trispectrum in ghost inflation where both the contact diagram and scale-exchange diagram are taken into account. The shape of trispectrum is discussed carefully and we find that the local form is absent in ghost inflation. In general, for the non-local shape trispectrum there are not analogous parameters to ${\tau }_{NL}^{loc.}$ and $g_{NL}^{loc.}$ which can completely characterize the size of local form trispectrum.

19 pages, 8 figures; clarifications and corrections added, version accepted for publication in JCAP

References in corpus (32)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Primordial trispectrum from inflation
• Angular Trispectrum of CMB Temperature Anisotropy from Primordial Non-Gaussianity with the Full Radiation Transfer Function
• Multi-brid inflation and non-Gaussianity
• Primordial non-Gaussianity, scale-dependent bias, and the bispectrum of galaxies
• The "in-in" Formalism and Cosmological Perturbations
• Non-gaussianity from the trispectrum in general single field inflation
• Large non-Gaussianity from multi-brid inflation
• Primordial Non-Gaussianities of General Multiple Field 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
• Curvaton Dynamics and the Non-Linearity Parameters in Curvaton Model
• Large Non-Gaussianity Implication for Curvaton Scenario
• On the full quantum trispectrum in multi-field DBI inflation
• Lorentz boost and non-Gaussianity in multi-field DBI-inflation
• Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
• Hilltop Non-Gaussianity
• Nonlinear perturbations of cosmological scalar fields with non-standard kinetic terms
• Scale Dependent Local Non-Gaussianity from Loops
• Constraints on f_nl and g_nl from the analysis of the N-pdf of the CMB large scale anisotropies
• Primordial Non-Gaussianities from the Trispectra in Multiple Field Inflationary Models
• The Trispectrum in the Multi-brid Inflation
• N-vaton
• On Non-Gaussianities in Multi-Field Inflation (N fields): Bi- and Tri-spectra beyond Slow-Roll
• Primordial Non-Gaussianity in Models with Dark Matter Isocurvature Fluctuations
• Trispectrum from Ghost Inflation
• Effect of Background Evolution on the Curvaton Non-Gaussianity
• Modulated Inflation
• Spectral Index in Curvaton Scenario
• Density Fluctuations in Thermal Inflation and Non-Gaussianity
• Statistical nature of non-Gaussianity from cubic order primordial perturbations: CMB map simulations and genus statistic
• Consistency relation for the Lorentz invariant single-field inflation

Cited by in corpus (14)

• Inflation, Cosmic Perturbations and Non-Gaussianities
• 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
• Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass
• Strong scale dependent bispectrum in the Starobinsky model of inflation
• Trispectrum from Ghost Inflation
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• Trispectrum estimation in various models of equilateral type non-Gaussianity
• Scalar-Induced Gravitational Waves from Ghost Inflation and Parity Violation
• Bouncing Anisotropic Universes with Varying Constants
• The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
• Halo/Galaxy Bispectrum with Equilateral-type Primordial Trispectrum
• Weyl-Invariant Gravity and the Nature of Dark Matter
• Effective Field Theory for Inflation