Quasi-Single Field Inflation and Non-Gaussianities

Abstract

In quasi-single field inflation models, massive isocurvature modes, that are coupled to the inflaton and have mass of order the Hubble parameter, can have nontrivial impacts on density perturbations, especially non-Gaussianities. We study a simple example of quasi-single field inflation in terms of turning inflaton trajectory. Large bispectra with a one-parameter family of novel shapes arise, lying between the well-known local and equilateral shape. The trispectra can also be very large and its magnitude tNL can be much larger than fNL squared.

56 pages, v4, minor revision with added comments, JCAP version

References in corpus (36)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Effective Field Theory of Inflation
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• Effects of Scale-Dependent Non-Gaussianity on Cosmological Structures
• Non-Gaussianities in two-field inflation
• Detection of primordial non-Gaussianity (fNL) in the WMAP 3-year data at above 99.5% confidence
• Primordial perturbations and non-Gaussianities in DBI and general multi-field inflation
• The shape of primordial non-Gaussianity and the CMB bispectrum
• Perturbations in generalized multi-field inflation
• Primordial trispectrum from inflation
• The Gelaton Scenario: Equilateral non-Gaussianity from multi-field dynamics
• Optimal limits on f_{NL}^{local} from WMAP 5-year data
• 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
• Detectability of the effect of Inflationary non-Gaussianity on halo bias
• The "in-in" Formalism and Cosmological Perturbations
• Large non-Gaussianity from multi-brid inflation
• An Estimate of the Primordial Non-Gaussianity Parameter f_NL Using the Needlet Bispectrum from WMAP
• 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
• Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
• General Single Field Inflation with Large Positive Non-Gaussianity
• DBI-Curvaton
• New Optimised Estimators for the Primordial Trispectrum
• Nonlinear perturbations of cosmological scalar fields with non-standard kinetic terms
• Anisotropic Trispectrum of Curvature Perturbations Induced by Primordial Non-Abelian Vector Fields
• Primordial Non-Gaussianities from the Trispectra in Multiple Field Inflationary Models
• A Measurement of Primordial Non-Gaussianity Using WMAP 5-Year Temperature Skewness Power Spectrum
• Fine-Tuning in DBI Inflationary Mechanism
• Imprints of primordial non-Gaussianities in X-ray and SZ signals from galaxy clusters
• On Cross-correlations between Curvature and Isocurvature Perturbations during Inflation

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