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Tensors, BICEP2 results, prior dependence, and dust
2015
Physical Review D
We investigate the prior dependence on the inferred spectrum of primordial tensor perturbations, in light of recent results from BICEP2 and taking into account a possible dust contribution to polarized anisotropies. We highlight an optimized parameterization of the tensor power spectrum, and adoption of a logarithmic prior on its amplitude A_T, leading to results that transform more evenly under change of pivot scale. In the absence of foregrounds the tension between the results of BICEP2 and
doi:10.1103/physrevd.92.063511
fatcat:vpwilrwptzg7vbq44wzo7rxini