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.
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
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Pre-published on:
February 06, 2024
Published on:
April 23, 2024
Abstract
DOI: https://doi.org/10.22323/1.454.0016
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.