WMAP and Inflation
arXiv:hep-ph/0302150 · doi:10.1016/S0370-2693(03)00757-3
Abstract
We assay how inflationary models whose properties are dominated by the dynamics of a single scalar field are constrained by cosmic microwave background (CMB) data from the Wilkinson Microwave Anisotropy Probe (WMAP). We classify inflationary models in a plane defined by the horizon-flow parameters. Our approach differs from that of the WMAP collaboration in that we analyze only WMAP data and take the spectral shapes from slow-roll inflation rather than power-law parameterizations of the spectra. The only other information we use is the measurement of from the Hubble Space Telescope (HST) Key Project. We find that the spectral index of primordial density perturbations lies in the 1σrange 0.94<n_s<1.04 with no evidence of running. The ratio of the amplitudes of tensor and scalar perturbations is smaller than 0.61 and the inflationary scale is below 2.8\times 10^{16} GeV, both at the 2σC.L. No class of inflation or ekpyrotic/cyclic models is excluded. The λϕ^4 potential is excluded at 3σonly if the number of e-folds is assumed to be less than 45.
7 pages, 3 figures. Version to appear in PLB
References in corpus (30)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Efficient Computation of CMB anisotropies in closed FRW models
- Cosmological parameters from CMB and other data: a Monte-Carlo approach
- Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
- A Line of Sight Approach to Cosmic Microwave Background Anisotropies
- Particle Physics Models of Inflation and the Cosmological Density Perturbation
- The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
- Hybrid Inflation
- False Vacuum Inflation with Einstein Gravity
- Reconstructing the Inflaton Potential --- an Overview
- Cosmic Evolution in a Cyclic Universe
- The Cold Dark Matter Density Perturbation
- From Big Crunch to Big Bang
- Big-Bang Nucleosynthesis Predictions for Precision Cosmology
- Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
- The Physics of Microwave Background Anisotropies
- A limit on the detectability of the energy scale of inflation
- Higher order corrections to primordial spectra from cosmological inflation
- Separation of Gravitational-Wave and Cosmic-Shear Contributions to Cosmic Microwave Background Polarization
- Cosmological parameter estimation and the inflationary cosmology
- The Density Perturbation Power Spectrum to Second-Order Corrections in the Slow-Roll Expansion
- Constraints on Omega_m and sigma_8 from weak lensing in RCS fields
- Cosmic microwave background measurements can discriminate among inflation models
- On the Spectrum of Fluctuations in an Effective Field Theory of the Ekpyrotic Universe
- Measuring Cosmological Parameters with Cosmic Microwave Background Experiments
- The failure of cosmological perturbation theory in the new ekpyrotic and cyclic ekpyrotic scenarios
- New Constraints on inflation from the Cosmic Microwave Background
- Slow-roll inflation and CMB anisotropy data
- The Inflationary Gravity Waves in light of recent Cosmic Microwave Background Anisotropies data
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- Non-Gaussianity from Inflation: Theory and Observations
- Inflation Dynamics and Reheating
- How long before the end of inflation were observable perturbations produced?
- Completing Natural Inflation
- On Non-Gaussianity in the Curvaton Scenario
- Primordial Structure of Massive Black Hole Clusters
- Suppressing CMB Quadrupole with a Bounce from Contracting Phase to Inflation
- Superimposed Oscillations in the WMAP Data?
- Constraining slow-roll inflation with WMAP and 2dF
- A Horizon Ratio Bound for Inflationary Fluctuations
- Density perturbations in generalized Einstein scenarios and constraints on nonminimal couplings from the Cosmic Microwave Background
- Mixed inflaton and curvaton perturbations
- Considerations in optimizing CMB polarization experiments to constrain inflationary physics
- Model-Independent Reconstruction of the Primordial Power Spectrum from WMAP Data
- Sneutrino Inflation in the Light of WMAP: Reheating, Leptogenesis and Flavour-Violating Lepton Decays
- On the reheating stage after inflation
- WMAPing the Universe: Supersymmetry, Dark Matter, Dark Energy, Proton Decay and Collider Physics
- WMAPping inflationary physics
- Second Order General Slow-Roll Power Spectrum
- WMAP data and the curvature of space
- Cosmological parameter estimation using Very Small Array data out to l=1500
- Reconstructing the primordial power spectrum - a new algorithm
- Effective Field Theories and Inflation
- Lectures on Cosmic Inflation and its Potential Stringy Realizations
- Cosmology from Rolling Massive Scalar Field on the anti-D3 Brane of de Sitter Vacua
- Evolution of Second-Order Cosmological Perturbations and Non-Gaussianity
- Constraints on braneworld inflation from CMB anisotropies
- On: Natural Inflation
- Observational constraints on patch inflation in noncommutative spacetime
- Primordial fluctuations and cosmological inflation after WMAP 1.0
- Running of the Scalar Spectral Index from Inflationary Models
- Enhancement of Non-Gaussianity after Inflation
- Observational constraints on braneworld inflation: the effect of a Gauss-Bonnet term
- MCMC analysis of WMAP3 and SDSS data points to broken symmetry inflaton potentials and provides a lower bound on the tensor to scalar ratio
- What Can WMAP Tell Us About The Very Early Universe? New Physics as an Explanation of Suppressed Large Scale Power and Running Spectral Index
- Testing for double inflation with WMAP
- Non-parametric reconstruction of the primordial power spectrum at horizon scales from WMAP data
- Measuring the primordial power spectrum: Principal component analysis of the cosmic microwave background
- Correlated Isocurvature Fluctuation in Quintessence and Suppressed CMB Anisotropies at Low Multipoles
- Vacuum Choices and the Predictions of Inflation
- Inflation and dark energy arising from geometrical tachyons
- The Lyth Bound and the End of Inflation
- An inflation model with large variations in spectral index
- Weak Lensing and CMB: Parameter forecasts including a running spectral index
- Inflationary potentials yielding constant scalar perturbation spectral indices
- Implication of Compensator Field and Local Scale Invariance in the Standard Model
- Classification of dark energy models in the (w_0,w_a) plane
- The Effective Theory of Inflation in the Standard Model of the Universe and the CMB+LSS data analysis
- Multiple-field inflation and the CMB
- Constraints on Kinetically Modified Inflation from WMAP5
- Large-scale curvature perturbations with spatial and time variations of the inflaton decay rate
- The Stochastic Gravitational-Wave Background and the Inflation to Radiation Transition in the Early Universe
- Inflation from D3-brane motion in the background of D5-branes
- Brany Liouville Inflation
- Boundary Inflation and the WMAP Data
- Can MSSM Particle be the Inflaton?
- Reconstructing large running-index inflaton potentials
- On the Amount of Gravitational Waves from Inflation
- Inflationary Potential from 21 cm Tomography and Planck
- Supergravity Minimal Inflation and its Spectral Index Revisited
- The quantum inflaton, primordial perturbations and CMB fluctuations
- An indirect limit on the amplitude of primordial Gravitational Wave Background from CMB-Galaxy Cross Correlation
- Out-of-equilibrium evolution of quantum fields in the hybrid model with quantum back reaction
- Anisotropic Inflation and the Origin of Four Large Dimensions
- Sneutrino Inflation
- Chaotic dynamics in preheating after inflation
- Resurrecting the exponential and inverse power-law potentials in non-canonical inflation
- A Quintessentially Geometric Model
- Early universe in view of a modified theory of gravity
- Axion and Right-handed Neutrino in the Minimal SUSY SO(10) Model
- The energy scale of inflation: is the hunt for the primordial B-mode a waste of time?
- Measuring the cosmological density perturbation
- Inflation after WMAP3
- Understanding selection effects in observed samples of cataclysmic variables
- WMAP Bounds on Braneworld Tachyonic Inflation
- WMAP and Supergravity Inflationary Models
- Inflation, Large Scale Structure and Particle Physics
- Clarifying Inflation Models: the Precise Inflationary Potential from Effective Field Theory and the WMAP data
- Theoretical priors in scalar-tensor cosmologies: Shift-symmetric Horndeski models