The Quest for B Modes from Inflationary Gravitational Waves
The search for the curl component (B mode) in the cosmic microwave background (CMB) polarization induced by inflationary gravitational waves is described. The canonical single-field slow-roll model of inflation is presented, and we explain the quantum production of primordial density perturbations and gravitational waves. It is shown how these gravitational waves then give rise to polarization in
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Features: Optimized Python and Fortran code Calculate CMB, lensing, source count and dark-age 21cm angular power spectra Matter transfer functions, power spectra, σ8 and related quanties General background cosmology Support for closed, open and flat models Scalar, vector and tensor modes including polarization Fast computation to ~0.1% accuracy, with controllable accuracy level Object-oriented Pyt
Detection of B-mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope
Gravitational lensing of the cosmic microwave background generates a curl pattern in the observed polarization. This "B-mode" signal provides a measure of the projected mass distribution over the entire observable Universe and also acts as a contaminant for the measurement of primordial gravity-wave signals. In this Letter we present the first detection of gravitational lensing B modes, using firs
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http://bicepkeck.org/b2_respap_arxiv_v1.pdf
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