The B-mode polarization of CMB and Cosmic Neutrino Background
Abstract
It is known that in contrast with the E-mode polarization, the B-mode polarization of the Cosmic Microwave Background cannot be generated by the Compton scattering in the case of scalar mode of metric perturbation. However it is possible to generate the B-mode by the Compton scattering in the case of tensor mode of metric perturbation. For this reason, the ratio of tensor to scalar modes of metric perturbation () is estimated by comparing the B-mode power spectrum with the E-mode at least for small . We study the CMB polarization specially B-mode due to the weak interaction of Cosmic Neutrino Background (CNB) and CMB, in addition to the Compton scattering in both cases of scalar and tensor metric perturbations. It is shown that the power spectrum of the B-mode polarization receives some contributions from scalar and tensor modes, which have effects on the value of -parameter. We also show that the B-mode polarization power spectrum can be used as an indirect probe into the CNB.
Keywords
Cite
@article{arxiv.1602.00237,
title = {The B-mode polarization of CMB and Cosmic Neutrino Background},
author = {Rohoollah Mohammadi and Jafar Khodagholizadeh and Mahdi Sadegh and She-Sheng Xue},
journal= {arXiv preprint arXiv:1602.00237},
year = {2016}
}