Extracting New Physics from the CMB

Abstract

We review how initial state effects generically yield an oscillatory component in the primordial power spectrum of inflationary density perturbations. These oscillatory corrections parametrize unknown new physics at a scale $M$ and are potentially observable if the ratio $H_{infl}/M$ is sufficiently large. We clarify to what extent present and future CMB data analysis can distinguish between the different proposals for initial state corrections.

Invited talk by B. Greene at the XXII Texas Symposium on Relativistic Astrophysics, Stanford University, 13-17 December 2004, (TSRA04-0001), 8 pages, LaTeX, some references added, added paragraph at the end of section 2 and an extra note added after the conclusions regarding modifications to the large k power spectra deduced from galaxy surveys

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Cited by in corpus (14)

• Primordial Non-Gaussianities from Inflation Models
• Signatures of Initial State Modifications on Bispectrum Statistics
• Comparing Infrared Dirac-Born-Infeld Brane Inflation to Observations
• Reconstruction of the primordial power spectrum of curvature perturbations using multiple data sets
• WMAP 7 Constraints on Oscillations in the Primordial Power Spectrum
• Universal Correction to the Inflationary Vacuum
• Angular Correlation Functions for Models with Logarithmic Oscillations
• Anisotropic non-Gaussianity from Rotational Symmetry Breaking Excited Initial States
• Where does Cosmological Perturbation Theory Break Down?
• Why does the effective field theory of inflation work?
• Rapid numerical solutions for the Mukhanov-Sasaki equation
• Inflation with a stringy minimal length, reworked
• Model-Independent Signatures of New Physics in non-Gaussianity
• Exact spectrum of scalar field perturbations in a radiation deformed closed de Sitter universe