Rotation of linear polarization plane and circular polarization from cosmological pseudoscalar fields

Fabio Finelli and Matteo Galaverni

Phys. Rev. D 79, 063002 – Published 4 March 2009

Abstract

We discuss the rotation of the linear polarization plane and the production of circular polarization generated by a cosmological pseudoscalar field. 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 linear polarization rotation angle is constant in time and the exact result.

Received 12 September 2008

DOI:https://doi.org/10.1103/PhysRevD.79.063002

Authors & Affiliations

Fabio Finelli^1,2,3 and Matteo Galaverni^1,3,4

¹INAF-IASF Bologna, Via Gobetti 101, I-40129 Bologna, Italy
²INAF/OAB, Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
³INFN, Sezione di Bologna, Via Irnerio 46, I-40126 Bologna, Italy
⁴Dipartimento di Fisica, Università di Ferrara, Via Saragat 1, I-44100 Ferrara, Italy

Redshift evolution of cosmic birefringence in CMB anisotropies

Matteo Galaverni, Fabio Finelli, and Daniela Paoletti

Phys. Rev. D 107, 083529 (2023)

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Vol. 79, Iss. 6 — 15 March 2009

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Physical Review D

covering particles, fields, gravitation, and cosmology