Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data
نویسندگان
چکیده
منابع مشابه
Probing polarization states of primordial gravitational waves with CMB anisotropies
We discuss the polarization signature of primordial gravitational waves imprinted in cosmic microwave background (CMB) anisotropies. The high-energy physics motivated by superstring theory or M-theory generically yields parity violating terms, which may produce a circularly polarized gravitational wave background (GWB) during inflation. In contrast to the standard prediction of inflation with u...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2020
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2020.135240