New Constraints on Anisotropic Rotation of CMB Polarization

Abstract

The coupling of a scalar field to electromagnetic field via the Chern-Simons term will rotate the polarization directions of the cosmic microwave background radiation. The rotation angle which relies on the distribution of the scalar field on the CMB sky is direction dependent. Such anisotropies will give rise to new distortions to the power spectra of CMB polarization and it can be used to probe the detailed physics of the scalar field. In this paper we use the updated observational data to constrain the anisotropic rotation angle in a model independent way. We find that the dominant effect of the anisotropic rotation on CMB comes from its variance and it is constrained tightly by the current data.

9 pages, 2 figures, presentations are improved to match the version to appear in JCAP

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Cited by in corpus (16)

• Axion Dark Matter Detection with CMB Polarization
• The Atacama Cosmology Telescope: Constraints on Cosmic Birefringence
• BICEP2 / Keck Array IX: New Bounds on Anisotropies of CMB Polarization Rotation and Implications for Axion-Like Particles and Primordial Magnetic Fields
• Future CMB constraints on cosmic birefringence and implications for fundamental physics
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• Fluctuations of cosmological birefringence and the effect on CMB B-mode polarization
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• Testing CPT Symmetry with Current and Future CMB Measurements
• An efficient probe of the cosmological CPT violation
• Direct couplings of mimetic dark matter and their cosmological effects
• Impact of Anisotropic Birefringence on Measuring Cosmic Microwave Background Lensing
• Measuring axion gradients with photon interferometry (MAGPI)
• Exact CMB B-mode power spectrum from anisotropic cosmic birefringence
• Computing Microwave Background Polarization Power Spectra from Cosmic Birefringence
• Cosmic Birefringence from CP-Violating Axion Interactions
• A short review on Quintom dark energy theory