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

Details The Polarization of the Cosmic Microwave Background Due to Primordial Gravitational Waves The Polarization of the Cosmic Microwave Background Due to Primordial Gravitational Waves

2006-07-10

arxiv.org/abs/astro-ph/0607208v1

Int.J.Mod.Phys.A21:2459-2479,2006

Astronomy and Astrophysics

Astrophysics

25 pages, 4 figures, review published in IJMPA

Scientific paper

10.1142/S0217751X06033076

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.

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