Inflation after WMAP3

Abstract

I discuss the current status of inflationary cosmology in light of the recent WMAP 3-year data release. The basic predictions of inflation are all supported by the data. Inflation also makes predictions which have not been well tested by current data but can be by future experiments, most notably a deviation from a scale-invariant power spectrum and the production of primordial gravitational waves. A scale-invariant spectrum is disfavored by current data, but not conclusively. Tensor modes are currently poorly constrained, and slow-roll inflation does not make an unambiguous prediction of the expected amplitude of primordial gravitational waves. A tensor/scalar ratio of $r\simeq 0.01$ is within reach of near-future measurements.

To appear in the proceedings of Colliders to Cosmic Rays 2007. 8 pages, 2 figures. (V2: Minor typo corrected)

References in corpus (24)

• Cosmological parameters from SDSS and WMAP
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• What would we learn by detecting a gravitational wave signal in the cosmic microwave background anisotropy?
• Formalising the Slow-Roll Approximation in Inflation
• A time varying speed of light as a solution to cosmological puzzles
• The Scientific Programme of Planck
• Inflation: flow, fixed points and observables to arbitrary order in slow roll
• Cosmic microwave background measurements can discriminate among inflation models
• Kinematic Constraints to the Key Inflationary Observables
• Constraining slow-roll inflation with WMAP and 2dF
• WMAPping inflationary physics
• WMAP and Inflation
• Constraining Inflation with Cosmic Microwave Background Polarization
• Monte Carlo reconstruction of the inflationary potential
• Inflation at the Electroweak Scale
• New Constraints on inflation from the Cosmic Microwave Background
• Inflation at Low Scales: General Analysis and a Detailed Model
• Constraints on inflation from CMB and Lyman-alpha forest
• Natural Inflation: the status after WMAP 3-year data
• Inflationary Theory versus Ekpyrotic/Cyclic Scenario
• Conceptual Problems of Inflationary Cosmology and a New Approach to Cosmological Structure Formation
• Can Inflation be Falsified?
• Cosmology, inflation, and the physics of nothing

Cited by in corpus (5)

• MCMC analysis of WMAP3 and SDSS data points to broken symmetry inflaton potentials and provides a lower bound on the tensor to scalar ratio
• The inflationary gravitational-wave background and measurements of the scalar spectral index
• Large Gravitational Waves and Lyth Bound in Multi Brane Inflation
• Gauss-Bonnet braneworld and WMAP three year results
• Falsifying Tree Level String Motivated Bouncing Cosmologies