Non-Gaussianity in a Matter Bounce

Abstract

A nonsingular bouncing cosmology in which the scales of interest today exit the Hubble radius in a matter-dominated contracting phase yields an alternative to inflation for producing a scale-invariant spectrum of adiabatic cosmological fluctuations. In this paper we identify signatures in the non-Gaussianities of the fluctuations which are specific to this scenario and allow it to be distinguished from the results of inflationary models.

10 pages, 6 figures, 2 references added

References in corpus (48)

• Non-Gaussian features of primordial fluctuations in single field inflationary models
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• Non-Gaussianity from Inflation: Theory and Observations
• DBI in the Sky
• Acoustic Signatures in the Primary Microwave Background Bispectrum
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Nongaussian Isocurvature Perturbations from Inflation
• Absence of Singularity in Loop Quantum Cosmology
• Second-Order Cosmological Perturbations from Inflation
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
• The shape of non-Gaussianities
• Bouncing Universes in String-inspired Gravity
• On the Generation of a Scale-Invariant Spectrum of Adiabatic Fluctuations in Cosmological Models with a Contracting Phase
• Duality Invariance of Cosmological Perturbation Spectra
• Eternal inflation and the initial singularity
• Bouncing Universe with Quintom Matter
• Isotropic Loop Quantum Cosmology
• Bouncing Braneworlds
• A Cosmological Theory without Singularities
• A Nonsingular Cosmology with a Scale-Invariant Spectrum of Cosmological Perturbations from Lee-Wick Theory
• The Angular Dependence of the Three-Point Correlation Function of the Cosmic Microwave Background Radiation as Predicted by Inflationary Cosmologies
• On the Construction of Nonsingular Pre-Big-Bang and Ekpyrotic Cosmologies and the Resulting Density Perturbations
• A Model of Graceful Exit in String Cosmology
• Primordial perturbations in a non singular bouncing universe model
• A Matrix Big Bang
• Cosmological perturbations through a simple bounce
• Non-Gaussianities in New Ekpyrotic Cosmology
• Non-perturbative Gravity, Hagedorn Bounce & CMB
• Cosmology without inflation
• Non-Gaussian Density Fluctuations from Entropically Generated Curvature Perturbations in Ekpyrotic Models
• Time Dependent Cosmologies and Their Duals
• Non-Gaussianities from ekpyrotic collapse with multiple fields
• The graceful exit in pre-big bang string cosmology
• Parametric amplification of metric fluctuations through a bouncing phase
• Evolution of Metric Perturbations in Quintom Bounce model
• Matrix Cosmology
• A Model Of Inflationary Cosmology Without Singularity
• Cosmic acceleration, scalar fields and observations
• Lectures on the Theory of Cosmological Perturbations
• The Accelerating Universe and Dark Energy: Evidence from Type Ia Supernovae
• Electroweak baryogenesis and primordial hypermagnetic fields
• Measuring spacetime: from big bang to black holes
• Inflation and Braneworlds
• Cosmological applications of loop quantum gravity
• Scalar perturbations in regular two-component bouncing cosmologies
• Study of a Class of Four Dimensional Nonsingular Cosmological Bounces
• The cosmic microwave background bispectrum as a test of the physics of inflation and probe of the astrophysics of the low-redshift universe

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• Matter Bounce in Horava-Lifshitz Cosmology
• Bouncing Galileon Cosmologies
• Entropic cosmology: a unified model of inflation and late-time acceleration
• An Infinite Set of Ward Identities for Adiabatic Modes in Cosmology
• A Single Field Inflation Model with Large Local Non-Gaussianity
• Inflation, Cosmic Perturbations and Non-Gaussianities
• Non-singular cosmology in a model of non-relativistic gravity
• Two Field Matter Bounce Cosmology
• A Matter Bounce By Means of Ghost Condensation
• The Matter Bounce Curvaton Scenario
• Revisiting non-Gaussianity from non-attractor inflation models
• Local non-Gaussianity from inflation
• Towards Anisotropy-Free and Non-Singular Bounce Cosmology with Scale-invariant Perturbations
• Cosmological bouncing solutions in f(T,B) gravity
• Non-singular bounce scenarios in loop quantum cosmology and the effective field description
• Harrison--Zeldovich spectrum from conformal invariance
• Evolution of Metric Perturbations in Quintom Bounce model
• Cosmology of the Very Early Universe
• The Matter Bounce Alternative to Inflationary Cosmology
• Bouncing cosmologies with dark matter and dark energy
• An Extended Matter Bounce Scenario: current status and challenges
• Bounce and cyclic cosmology in extended nonlinear massive gravity
• Highly non-Gaussian tails and primordial black holes from single-field inflation
• Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
• Preheating a bouncing universe
• Slavnov-Taylor Identities for Primordial Perturbations
• DHOST Bounce
• Evolution of cosmological perturbations and the production of non-Gaussianities through a nonsingular bounce: Indications for a no-go theorem in single field matter bounce cosmologies
• Primordial perturbation with a modified dispersion relation
• Loop quantum cosmology, non-Gaussianity, and CMB power asymmetry
• Thermal Fluctuations and Bouncing Cosmologies
• Fluctuations in a Hořava-Lifshitz Bouncing Cosmology
• Cyclic cosmology from Lagrange-multiplier modified gravity
• Emergent Universe Scenario via Quintom Matter
• Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
• Scalar and Tensor Perturbations in DHOST Bounce Cosmology
• Features from the non-attractor beginning of inflation
• The Observational Implications of Loop Quantum Cosmology
• Matter bounce cosmology with a generalized single field: non-Gaussianity and an extended no-go theorem
• Ultra slow-roll G-inflation
• Processing of Cosmological Perturbations in a Cyclic Cosmology
• Non-Gaussianity in single field models without slow-roll
• Perturbations in Matter Bounce with Non-minimal Coupling
• Multi-Stream Inflation
• A Radiation Bounce from the Lee-Wick Construction?
• Consistent Scalar and Tensor Perturbation Power Spectra in Single Fluid Matter Bounce with Dark Energy Era
• Cosmology of the Spinor Emergent Universe and Scale-invariant Perturbations
• A new approach to non-commutative inflation
• Multiple Soft Limits of Cosmological Correlation Functions
• Systematics of Adiabatic Modes: Flat Universes
• Non-Gaussianities of Single Field Inflation with Non-minimal Coupling
• Cosmological Perturbations Across an S-brane
• Converting entropy to curvature perturbations after a cosmic bounce
• Large Nonlocal Non-Gaussianity from a Curvaton Brane
• Non-Trivial Checks of Novel Consistency Relations
• The tensor bi-spectrum in a matter bounce
• Searching for a matter bounce cosmology with low redshift observations
• Bounce and cyclic cosmology in new gravitational scalar-tensor theories
• Unconventional Cosmology
• Constraining $F(R)$ bouncing cosmologies with primordial black holes
• On dark energy models of single scalar field
• Primordial non-Gaussianities of scalar and tensor perturbations in general bounce cosmology: Evading the no-go theorem
• Can non-minimal coupling restore the consistency condition in bouncing universes?
• Bounce and cyclic cosmology in weakly broken galileon theories
• Non-gaussianity in the foreground-reduced CMB maps
• The de Broglie-Bohm Quantum Theory and its Application to Quantum Cosmology
• Primordial Features as Evidence for Inflation
• Rotating a Curvaton Brane in a Warped Throat
• Can the Big Bang Singularity be avoided by a single scalar field?
• Evading the theoretical no-go theorem for nonsingular bounces in Horndeski/Galileon cosmology
• Mapping the large-angle deviation from Gaussianity in simulated CMB maps
• Production of non-gaussianities in a bouncing phase
• Massive gravity and the suppression of anisotropies and gravitational waves in a matter-dominated contracting universe
• The effects on CMB power spectra and bispectra from the polarization rotation and its correlations with temperature and E-polarization
• Thermal fluctuations in viscous cosmology
• Bouncing behavior in $f(R,L_m)$ gravity: Phantom crossing and energy conditions
• Holographic Curvature Perturbations in a Cosmology with a Space-Like Singularity
• Non-singular Cyclic Cosmology without Phantom Menace
• Parity violation in primordial tensor non-Gaussianities from matter bounce cosmology
• Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
• Cuscuton Bounce Beyond the Linear Regime: Bispectrum and Strong Coupling Constraints
• Testing the Lorentz and CPT Symmetry with CMB polarizations and a non-relativistic Maxwell Theory
• Connections between Minkowski and Cosmological Correlation Functions
• Mapping possible non-Gaussianity in the Planck maps
• A short review on Quintom dark energy theory
• Nonlinear Perturbations in a Variable Speed of Light Cosmology
• Scalar Perturbation in Symmetric Lee-Wick Bouncing Universe
• Constraining matter-bounce scenario from scalar-induced vector perturbations
• The Effect of Primordial Non-Gaussianities on the Seeds of Super-Massive Black Holes
• Revisiting the angular momentum growth of protostructures evolved from non-Gaussian initial conditions