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arXiv · 0909.3629

The V-mode polarization of the Cosmic Microwave Background

Massimo Giovannini
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Abstract

The V-mode polarization of the Cosmic Microwave Background is discussed in a weakly magnetized plasma. The VV and VT angular power spectra are computed for adiabatic initial conditions of the Einstein-Boltzmann hierarchy. Depending upon the frequency channel and upon the magnetic field intensity, the VT power spectra of the circular polarization can even be seven orders of magnitude larger than a putative B-mode polarization stemming from the lensing of the primary anisotropies. Specific programs aimed at the direct detection of the V-mode polarization of the Cosmic Microwave Background could provide a new observational tool for the scrutiny of pre-decoupling physics.

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Massimo Giovannini. 2010-01-02. The V-mode polarization of the Cosmic Microwave Background. https://doi.org/10.1103/physrevd.80.123013

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