2016/06/14 by Emanuela Dimastrogiovanni, Razieh Emami · 21 citations
Economics, Econometrics and Finance · Physics and Astronomy · #Anisotropy #Astrophysics #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dissipation #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Physics #Primordial fluctuations #Quantum mechanics #Stochastic processes and financial applications #Theoretical physics #astro-ph.CO #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2016/12/015
published in Journal of Cosmology and Astroparticle Physics 2016(12), 015 (Institute of Physics) · 29 pages, 9 figures
arxiv created 2016/06/14 · openalex publication_date 2016/12/07 · arxiv updated 2016/12/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.