Tensors, non-Gaussianities, and the future of potential reconstruction
arXiv:0812.1797 · doi:10.1088/1475-7516/2009/04/019
Abstract
We present projections for reconstruction of the inflationary potential expected from ESA's upcoming Planck Surveyor CMB mission. We focus on the effects that tensor perturbations and the presence of non-Gaussianities have on reconstruction efforts in the context of non-canonical inflation models. We consider potential constraints for different combinations of detection/null-detection of tensors and non-Gaussianities. We perform Markov Chain Monte Carlo and flow analyses on a simulated Planck-precision data set to obtain constraints. We find that a failure to detect non-Gaussianities precludes a successful inversion of the primordial power spectrum, greatly affecting uncertainties, even in the presence of a tensor detection. In the absence of a tensor detection, while unable to determine the energy scale of inflation, an observable level of non-Gaussianities provides correlations between the errors of the potential parameters, suggesting that constraints might be improved for suitable combinations of parameters. Constraints are optimized for a positive detection of both tensors and non-Gaussianities.
arXiv comment12 pages, 5 figures, LaTeX; V2: version submitted to JCAP
References in corpus (47)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Cosmological parameters from CMB and other data: a Monte-Carlo approach
- de Sitter Vacua in String Theory
- k-Inflation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
- Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
- Towards Inflation in String Theory
- Perturbations in k-inflation
- DBI in the Sky
- Observational Signatures and Non-Gaussianities of General Single Field Inflation
- Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
- Flux Compactification
- Scalar Speed Limits and Cosmology: Acceleration from D-cceleration
- Formalising the Slow-Roll Approximation in Inflation
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Foreground Emission
- String Cosmology: A Review
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
- Effects of Scale-Dependent Non-Gaussianity on Cosmological Structures
- On non-gaussianities in single-field inflation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Foreground Emission
- Inflation: flow, fixed points and observables to arbitrary order in slow roll
- Inflation model constraints from the Wilkinson Microwave Anisotropy Probe three-year data
- II: Bayesian Methods for Cosmological Parameter Estimation from Cosmic Microwave Background Measurements
- Kinematic Constraints to the Key Inflationary Observables
- On Inflation in String Theory
- Phenomenology of D-Brane Inflation with General Speed of Sound
- Comparing Infrared Dirac-Born-Infeld Brane Inflation to Observations
- Lectures on Cosmic Inflation and its Potential Stringy Realizations
- On the inflationary flow equations
- Implications of a Running Spectral Index for Slow Roll Inflation
- The Robinson Gravitational Wave Background Telescope (BICEP): a bolometric large angular scale CMB polarimeter
- Reconstructing a general inflationary action
- K-inflationary Power Spectra in the Uniform Approximation
- Primordial Black Holes, Eternal Inflation, and the Inflationary Parameter Space after WMAP5
- The Pursuit of Non-Gaussian Fluctuations in the Cosmic Microwave Background
- Deciphering Inflation with Gravitational Waves: Cosmic Microwave Background Polarization vs. Direct Detection with Laser Interferometers
- New constraints on the observable inflaton potential from WMAP and SDSS
- Latest inflation model constraints from cosmic microwave background measurements
- Constraints on Kinetically Modified Inflation from WMAP5
- A Consistency Relation for Power Law Inflation in DBI models
- Limits on primordial power spectrum resolution: An inflationary flow analysis
- Cosmological constraints on general, single field inflation
- On the Slow Roll Expansion for Brane Inflation
- Impact of Uncertainties in the Cosmological Parameters on the Measurement of Primordial non-Gaussianity
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- Planck 2013 results. XXII. Constraints on inflation
- Bayesian Analysis of Inflation II: Model Selection and Constraints on Reheating
- Bayesian Analysis of Inflation: Parameter Estimation for Single Field Models
- B-modes and the Nature of Inflation
- Bayesian Analysis of Inflation III: Slow Roll Reconstruction Using Model Selection
- Constraining supergravity inflationary framework with non-minimal Kähler operators
- Horizon-Flow off-track for Inflation
- Inflationary potentials in DBI models
- Observational Signatures of Gravitational Couplings in DBI Inflation
- Collective Phenomena and Non-Finite State Computation in a Human Social System
- Relations between canonical and non-canonical inflation
- Observational constraints on tachyon and DBI inflation
- Optimizing future experimental probes of inflation
- Trans-Planckian Censorship and -inflation
- The Degeneracy Problem in Non-Canonical Inflation
- Let Effective Field Theory of Inflation flow: stochastic generation of models with red/blue tensor tilt
- Constraints on single-field inflation with WMAP, SPT and ACT data -- A last-minute stand before Planck
- Large Blue Spectral Isocurvature Spectral Index Signals Time-Dependent Mass
- Identifying the inflaton with primordial gravitational waves
- Probing the primordial power spectra with inflationary priors
- Horizon-preserving dualities and perturbations in non-canonical scalar field cosmologies
- B-modes and the sound speed of primordial fluctuations