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

Shih Hao Ho, Win-Fun Kao*, Kazuharu Bamba, C. Q. Geng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
JournalEuropean Physical Journal C
Volume75
Issue number5
DOIs
StatePublished - 1 May 2015

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