2008/04/21 by Massimo Giovannini, Kerstin E. Kunze
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Cosmology and Gravitation Theories #Geomagnetism and Paleomagnetism Studies #Solar and Space Plasma Dynamics #astro-ph #gr-qc #hep-ex #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.78.023010
published as Phys.Rev.D78:023010,2008 · 53 pages, 15 included figures
arxiv created 2008/04/21 · openalex publication_date 2008/07/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The high- and low-frequency descriptions of the predecoupling plasma are deduced from the Vlasov-Landau treatment generalized to curved space-times and in the presence of the relativistic fluctuations of the geometry. It is demonstrated that the interplay between one-fluid and two-fluid treatments is mandatory for a complete and reliable calculation of the polarization observables. The Einstein-Boltzmann hierarchy is generalized to handle the dispersive propagation of the electromagnetic disturbances in the predecoupling plasma. Given the improved physical and numerical framework, the polarization observables are computed within the magnetized \ensuremathΛCDM paradigm (m\ensuremathΛCDM). In particular, the Faraday-induced B-mode is consistently estimated by taking into account the effects of the magnetic fields on the initial conditions of the Boltzmann hierarchy, on the dynamical equations, and on the dispersion relations. The complete calculations of the angular power spectra constitute the first step for the derivation of magnetized maps of the CMB temperature and polarization which are here obtained for the first time and within the minimal m\ensuremathΛCDM model. The obtained results set the ground for direct experimental scrutiny of large-scale magnetism via the low- and high-frequency instruments of the Planck explorer satellite.