Lensing signals from spin-2 perturbations

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Published 14 January 2016 © 2016 IOP Publishing Ltd and Sissa Medialab srl
, , Citation Julian Adamek et al JCAP01(2016)024 DOI 10.1088/1475-7516/2016/01/024

1475-7516/2016/01/024

Abstract

We compute the angular power spectra of the E-type and B-type lensing potentials for gravitational waves from inflation and for tensor perturbations induced by scalar perturbations. We derive the tensor-lensed CMB power spectra for both cases. We also apply our formalism to determine the linear lensing potential for a Bianchi I spacetime with small anisotropy.

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10.1088/1475-7516/2016/01/024