Constraining Isocurvature Initial Conditions with WMAP 3-year data

Abstract

We present constraints on the presence of isocurvature modes from the temperature and polarization CMB spectrum data from the WMAP satellite alone, and in combination with other datasets including SDSS galaxy survey and SNLS supernovae. We find that the inclusion of polarization data allows the WMAP data alone, as well as in combination with complementary observations, to place improved limits on the contribution of CDM and neutrino density isocurvature components individually. With general correlations, the upper limits on these sub-dominant isocurvature components are reduced to ~60% of the first year WMAP results, with specific limits depending on the type of fluctuations. If multiple isocurvature components are allowed, however, we find that the data still allow a majority of the initial power to come from isocurvature modes. As well as providing general constraints we also consider their interpretation in light of specific theoretical models like the curvaton and double inflation.

8 pages, 7 figures. Revised Sec 4 and Figs 3-4 post-publication to correct an error for models with varying isocurvature spectral index

References in corpus (46)

• Efficient Computation of CMB anisotropies in closed FRW models
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• Stable clustering, the halo model and nonlinear cosmological power spectra
• The 3D power spectrum of galaxies from the SDSS
• Generating the curvature perturbation without an inflaton
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
• Effects of Cosmological Moduli Fields on Cosmic Microwave Background
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• The primordial density perturbation in the curvaton scenario
• Nongaussian Isocurvature Perturbations from Inflation
• Fast and reliable MCMC for cosmological parameter estimation
• Metric perturbations in two-field inflation
• Primordial Nucleosynthesis: Successes And Challenges
• An Observational Test of Two-field Inflation
• The General Primordial Cosmic Perturbation
• Isocurvature Perturbations in Multiple Inflationary Models
• SDSS galaxy bias from halo mass-bias relation and its cosmological implications
• Cosmic Density Perturbations from Late-Decaying Scalar Condensations
• Observational constraints on the curvaton model of inflation
• Adiabatic and Isocurvature Perturbations from Inflation: Power Spectra and Consistency Relations
• The simplest curvaton model
• The Curvaton as a Pseudo-Nambu-Goldstone Boson
• Cosmic microwave background anisotropies in the CDM model: a covariant and gauge-invariant approach
• Correlated perturbations from inflation and the cosmic microwave background
• Constraining Isocurvature Perturbations with CMB Polarization
• Bounds on isocurvature perturbations from CMB and LSS data
• Correlated mixtures of adiabatic and isocurvature cosmological perturbations
• Correlated Primordial Perturbations in Light of CMB and LSS Data
• Limits on isocurvature fluctuations from Boomerang and MAXIMA
• The Peccei-Quinn Field as Curvaton
• Constraints on isocurvature models from the WMAP first-year data
• The initial conditions of the universe: how much isocurvature is allowed?
• Correlated adiabatic and isocurvature CMB fluctuations in the wake of the WMAP
• Bounds on CDM and neutrino isocurvature perturbations from CMB and LSS data
• Squeezing the window on isocurvature modes with the Lyman-alpha forest
• Kinetic vs. Thermal-Field-Theory Approach to Cosmological Perturbations
• Assisting pre-big bang phenomenology through short-lived axions
• Cosmic structure formation in Hybrid Inflation models
• WMAP, neutrino degeneracy and non-Gaussianity constraints on isocurvature perturbations in the curvaton model of inflation
• Adiabatic and isocurvature fluctuations of Affleck-Dine field in D-term inflation model
• Characterising the Primordial Cosmic Perturbations
• Flat Dark Matter Dominated Models with Hybrid Adiabatic Plus Isocurvature Initial Conditions
• Measuring the geometry of the Universe in the presence of isocurvature modes

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• Non-adiabatic primordial fluctuations
• Supersymmetric inflation and baryogenesis via Extra-Flat directions of the MSSM
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