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Rotation of Linear Polarization Plane and Circular (802)
BibTeX
@MISC{Cosmological802rotationof,
author = {Polarization Cosmological and Pseudo-scalar Fields and F Finelli and M Galaverni},
title = {Rotation of Linear Polarization Plane and Circular},
year = {802}
}
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Abstract
Abstract. We show that a time evolving pseudo-scalar field coupled to the electromagnetic tensor generates circular polarization and does not only rotate the plane of linear polarization. We compute analytically and numerically the propagation of the Stokes parameters from the last scattering surface for an oscillating and a monotonic decreasing pseudo-scalar field acting as dark matter. PACS numbers: CMBR polarization theory, axions, dark matterRotation of Linear Polarization Plane and Circular Polarization from Cosmological Pseudo-Scalar Fields2
