PoS - Proceedings of Science
Volume 454 - 1st General Meeting and 1st Training School of the COST Action COSMIC WISPers (COSMICWISPers) - Wg2
Birefringence in CMB anisotropies due to cosmological pseudoscalar fields
M. Galaverni
Full text: pdf
Pre-published on: February 06, 2024
Published on: April 23, 2024
We review the data on isotropic cosmic birefringence coming from Cosmic Microwave Background (CMB) linear polarization observations.
We show the different constraints on the coupling constant $g_\phi$ between photons and axion-like particles acting as dark matter.
DOI: https://doi.org/10.22323/1.454.0016
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