Correlating CMB Spectral Distortions with Temperature: what do we learn on Inflation?

Abstract

Probing correlations among short and long-wavelength cosmological fluctuations is known to be decisive for deepening the current understanding of inflation at the microphysical level. Spectral distortions of the CMB can be caused by dissipation of cosmological perturbations when they re-enter Hubble after inflation. Correlating spectral distortions with temperature anisotropies will thus provide the opportunity to greatly enlarge the range of scales over which squeezed limits can be tested, opening up a new window on inflation complementing the ones currently probed with CMB and LSS. In this paper we discuss a variety of inflationary mechanisms that can be efficiently constrained with distortion-temperature correlations. For some of these realizations (representative of large classes of models) we derive quantitative predictions for the squeezed limit bispectra, finding that their amplitudes are above the sensitivity limits of an experiment such as the proposed PIXIE.

29 pages, 9 figures

References in corpus (32)

• The Effective Field Theory of Inflation
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• Enhanced Non-Gaussianity from Excited Initial States
• Inflation and WMAP three year data: Features have a Future!
• Mass hierarchies and non-decoupling in multi-scalar field dynamics
• Heavy fields, reduced speeds of sound and decoupling during inflation
• Non-gaussianity from the second-order cosmological perturbation
• Trapped Inflation
• CMB polarization features from inflation versus reionization
• New Universal Local Feature in the Inflationary Perturbation Spectrum
• Silk damping at a redshift of a billion: a new limit on small-scale adiabatic perturbations
• Curvature Perturbation Spectrum in Two-field Inflation with a Turning Trajectory
• Beyond y and μ: the shape of the CMB spectral distortions in the intermediate epoch, 1.5x10^4 < z < 2x10^5
• Anisotropic Inflation from Charged Scalar Fields
• Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Trispectrum
• Models of the Primordial Standard Clock
• On Features and Nongaussianity from Inflationary Particle Production
• Inflationary tensor fossils in large-scale structure
• Is a step in the primordial spectral index favored by CMB data ?
• Generalized Slow Roll for Non-Canonical Kinetic Terms
• A new method for calculating the primordial bispectrum in the squeezed limit
• Probing the scale dependence of non-Gaussianity with spectral distortions of the cosmic microwave background
• Scale-dependence of Non-Gaussianity in the Curvaton Model
• Testing the Running of non-Gaussianity through the CMB mu-distortion and the Halo Bias
• Strongly Scale-dependent Non-Gaussianity
• Nongaussianity from Particle Production During Inflation
• Consistency Relations for the Conformal Mechanism
• Untangling features in the primordial spectra
• The Separate Universe Approach to Soft Limits
• Cross-correlation between thermal Sunyaev-Zeldovich effect and the integrated Sachs-Wolfe effect

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• Consistency conditions and primordial black holes in single field inflation
• Evolution of CMB spectral distortion anisotropies and tests of primordial non-Gaussianity
• First Constraints on Small-Scale Non-Gaussianity from UV Galaxy Luminosity Functions
• Extracting foreground-obscured $\mu$-distortion anisotropies to constrain primordial non-Gaussianity
• Spectral distortion anisotropies from single-field inflation
• Non-Gaussianity constraints from Planck spectral distortion cross-correlations
• Angular dependence of primordial trispectra and CMB spectral distortions
• CMB Spectral Distortion Constraints on Thermal Inflation
• Primordial tensor bispectra in $\mu$-CMB cross-correlations
• New Horizons in Cosmology with Spectral Distortions of the Cosmic Microwave Background
• Leverage on small-scale primordial non-Gaussianity through cross-correlations between CMB $E$-mode and $\mu$-distortion anisotropies
• CMB Spectral Distortions from Cooling Macroscopic Dark Matter
• Statistical anisotropy in CMB spectral distortions
• Probing the Running of Primordial Bispectrum and Trispectrum using CMB Spectral Distortions