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Browsing by Author "Ho, Shih-Hao"

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    Cosmological birefringence due to CPT-even Chern-Simons-like term with Kalb-Ramond and scalar fields
    (2015-05-05)
    Ho, Shih-Hao
    ;
    Kao, W. F.
    ;
    Bamba, Kazuharu
    ;
    Geng, C. Q.
    ;
    物理研究所
    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 a neutrino current and a Kalb-Ramond field could induce a sizable rotation polarization angle in the cosmic microwave background radiation polarization.