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What is Anisotropic Cosmic Birefringence Limits about?

This paper investigates anisotropic cosmic birefringence and its effects on B-mode polarization in the cosmic microwave background (CMB), providing new constraints using data from multiple experiments. The analysis yields a best-fit amplitude of ACB = 0.42+0.40−0.34 × 10−4, consistent with zero within 2σ, and establishes a 95% confidence-level upper limit of ACB < 1 × 10−4. These findings highlight the potential for future experiments to enhance sensitivity to parity-violating physics in the early universe.

Author

qhwjd0622

Language

EN