Lensing signals from Spin-2 perturbations
Cosmology and Nongalactic Astrophysics
2016-01-18 v2 General Relativity and Quantum Cosmology
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.
Cite
@article{arxiv.1510.01566,
title = {Lensing signals from Spin-2 perturbations},
author = {Julian Adamek and Ruth Durrer and Vittorio Tansella},
journal= {arXiv preprint arXiv:1510.01566},
year = {2016}
}
Comments
19 pages, 5 figures; v2: discussions about non-linear contributions and quadrupole regularization extended, minor typos corrected, references added, matches published version