Journal
PHYSICS LETTERS B
Volume 737, Issue -, Pages 329-334Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2014.09.003
Keywords
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Funding
- project 973 [2012CB821804]
- NSFC [11173021, 11322324, 11075074]
- project of KIP of CAS
- Program for New Century Excellent Talents in University
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The B-mode polarization of the cosmic microwave background (CMB) radiation is an excellent information channel for the detection of relic gravitational waves. However, the detection is contaminated by the B-mode polarization generated by some other effects. In this paper, we discuss the contaminations caused by the cosmological birefringence, which converts the CMB E-mode to the B-mode, and forms the effective noise for the detection of gravitational waves. We find that this contamination is significant, if the rotation angle is large. However, this kind of B-mode can be properly de-rotated, and the effective noises can be greatly reduced. We find that, comparing with the contaminations caused by cosmic weak lensing, the residual polarization generated by the cosmological birefringence is negligible for the detection of relic gravitational waves in the CMB. (C) 2014 The Authors. Published by Elsevier B.V.
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