Trans-Planckian enhancements of the primordial non-Gaussianities

Abstract

This article examines how breaking a Lorentz-invariant description of nature at tiny space-time intervals would affect the non-Gaussian character of the pattern of primordial perturbations left by inflation. We specifically study a set of irrelevant operators that preserve the spatial symmetries of the usual inflationary background. The non-Gaussian component in the primordial fluctuations can be much larger than the usual, small, inflationary prediction and can thus lead to much stronger constraints on the role of "trans-Planckian" physics in inflation than those from the measurements of the primordial power spectrum.

arXiv comment12 pages, 1 figure, uses ReVTeX

References in corpus (60)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• A Line of Sight Approach to Cosmic Microwave Background Anisotropies
• Non-Gaussianity from Inflation: Theory and Observations
• Quantum Contributions to Cosmological Correlations
• The Trans-Planckian Problem of Inflationary Cosmology
• Second-Order Cosmological Perturbations from Inflation
• The Three--Point Correlation Function of the Cosmic Microwave Background in Inflationary Models
• The shape of non-Gaussianities
• Anisotropies in the Cosmic Microwave Background: An Analytic Approach
• A note on inflation and transplanckian physics
• The Robustness of Inflation to Changes in Super-Planck-Scale Physics
• Inflation as a Probe of Short Distance Physics
• Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
• Enhanced Non-Gaussianity from Excited Initial States
• Inflation after WMAP3: Confronting the Slow-Roll and Exact Power Spectra with CMB Data
• Signatures of Short Distance Physics in the Cosmic Microwave Background
• A generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation
• Inflation with a Planck-scale frequency cutoff
• Perturbation spectrum in inflation with cutoff
• Mode Generating Mechanism in Inflation with Cutoff
• Signatures of Initial State Modifications on Bispectrum Statistics
• On the Dependence of the Spectra of Fluctuations in Inflationary Cosmology on Trans-Planckian Physics
• Trans-Planckian dispersion and scale-invariance of inflationary perturbations
• Robustness of the inflationary perturbation spectrum to trans-Planckian physics
• Imprints of Short Distance Physics On Inflationary Cosmology
• Superimposed Oscillations in the WMAP Data?
• Are Inflationary Predictions Sensitive to Very High Energy Physics?
• On Signatures of Short Distance Physics in the Cosmic Microwave Background
• Inflation, holography, and the choice of vacuum in de Sitter space
• Fast Estimator of Primordial Non-Gaussianity from Temperature and Polarization Anisotropies in the Cosmic Microwave Background
• Trans-Planckian Effects in Inflationary Cosmology and the Modified Uncertainty Principle
• Cosmological Perturbations from a New-Physics Hypersurface
• Cosmology With Many Light Scalar Fields: Stochastic Inflation and Loop Corrections
• Is there an imprint of Planck scale physics on inflationary cosmology?
• Effective Field Theories and Inflation
• Exploring the Superimposed Oscillations Parameter Space
• Short Distance Physics and the Consistency Relation for Scalar and Tensor Fluctuations in the Inflationary Universe
• Initial state effects on the cosmic microwave background and trans-planckian physics
• Short distance and initial state effects in inflation: stress tensor and decoherence
• A Two-Fluid Approximation for Calculating the Cosmic Microwave Background Anisotropies
• Decoupling in an expanding universe: boundary RG-flow affects initial conditions for inflation
• Decoupling in an expanding universe: backreaction barely constrains short distance effects in the CMB
• Addendum to "Superimposed Oscillations in the WMAP Data?"
• Trans-Planckian footprints in inflationary cosmology
• On the Signature of Short Distance Scale in the Cosmic Microwave Background
• Renormalization of initial conditions and the trans-Planckian problem of inflation
• Bounds on Generic High-Energy Physics Modifications to the Primordial Power Spectrum from Back-Reaction on the Metric
• Boundary Effective Field Theory and Trans-Planckian Perturbations: Astrophysical Implications
• The cosmological vacuum ambiguity, effective actions, and transplanckian effects in inflation
• Observing Trans-Planckian Signatures in the Cosmic Microwave Background
• Dependence of Density Perturbations on the Coupling Constant in a Simple Model of Inflation
• Exact solution of inflationary model with minimum length
• Effects of Quantum Deformations on the Spectrum of Cosmological Perturbations
• The renormalization of the energy-momentum tensor for an effective initial state
• A Tree Theorem for Inflation
• Naturalness in Cosmological Initial Conditions
• Renormalized Stress Tensor for trans-Planckian Cosmology
• Trans-Planckian signals from the breaking of local Lorentz invariance

Cited by in corpus (10)

• Features and New Physical Scales in Primordial Observables: Theory and Observation
• Bispectrum signatures of a modified vacuum in single field inflation with a small speed of sound
• Multiple Soft Limits of Cosmological Correlation Functions
• On the Initial State and Consistency Relations
• Scale-dependent power spectrum from initial excited-de Sitter modes
• Primordial non-Gaussianities in single field inflationary models with non-trivial initial states
• Why does the effective field theory of inflation work?
• Quantum Fluctuations in Cosmology and How They Lead to a Multiverse
• Inflation in Non-de Sitter Background with Coherent States
• An introduction to inflation after Planck: from theory to observations