Rotation of Linear Polarization Plane and Circular Polarization from Cosmological Pseudoscalar Fields

Abstract

We discuss the rotation of the linear polarization plane and the production of circular polarization generated by a pseudoscalar field acting as dark matter. We compute analytically and numerically the propagation of the Stokes parameters from the last scattering surface for an oscillating and a monotonic decreasing pseudoscalar field. For the models studied in this paper, we show the comparison between the widely used approximation in which the rotation angle is constant in time and the exact result.

Final version appeared in Physical Review D

References in corpus (3)

• Constraints on CPT violation from WMAP three year polarization data: a wavelet analysis
• Spectral Dependence of CMB Polarization and Parity
• Cosmological Magnetic Fields and CMBR Polarization

Cited by in corpus (4)

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• CMB Polarization Systematics, Cosmological Birefringence and the Gravitational Waves Background
• A Constraint on Planck-scale Modifications to Electrodynamics with CMB polarization data
• $CPT$ Violating Electrodynamics and Chern-Simons Modified Gravity