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Cosmological birefringence due to CPT-even Chern-Simons-like term with Kalb-Ramond and scalar fields

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arxiv 1008.0486 v1 pith:Y3I53M4T submitted 2010-08-03 hep-ph astro-ph.CO

Shih-Hao Ho , W. F. Kao , Kazuharu Bamba , C. Q. Geng This is my paper · ORCID
classification hep-phastro-ph.CO
keywords kalb-ramondbirefringencechern-simons-likecosmologicalcpt-evenfieldspolarizationscalar
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We study the CPT-even dimension-six Chern-Simons-like term by including dynamical Kalb-Ramond and scalar fields to examine the cosmological birefringence. We show that the combined effect of neutrino current and Kalb-Ramond field could induce a sizable rotation polarization angle in the cosmic microwave background radiation polarization.

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  1. 3-form dark energy and cosmic birefringence

    astro-ph.CO 2026-08 conditional novelty 6.0 of 10

    3-form dark energy can explain cosmic birefringence with a dimension-4 photon coupling, yielding redshift profiles that can mimic or differ from axion dark energy, but the implied photon mass estimate is numerically shaky.

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