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The Polarization of the Cosmic Microwave Background due to Primordial Gravitational Waves

Keating, Brian G., Polnarev, Alexander G., Miller, Nathan J. and Baskaran, Deepak 2006. The Polarization of the Cosmic Microwave Background due to Primordial Gravitational Waves. International Journal of Modern Physics A 21 (12) , pp. 2459-2479. 10.1142/S0217751X06033076

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We review current observational constraints on the polarization of the Cosmic Microwave Background (CMB), with a particular emphasis on detecting the signature of primordial gravitational waves. We present an analytic solution to the Polanarev approximation for CMB polarization produced by primordial gravitational waves. This simplifies the calculation of the curl, or B-mode power spectrum associated with gravitational waves during the epoch of cosmological inflation. We compare our analytic method to existing numerical methods and also make predictions for the sensitivity of upcoming CMB polarization observations to the inflationary gravitational wave background. We show that upcoming experiments should be able either detect the relic gravitational wave background or completely rule out whole classes of inflationary models.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Cosmic microwave background ; Polarization ; Measurements
ISSN: 0217-751X
Last Modified: 19 Mar 2016 22:03

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