Scalar-tensor correlations and large-scale power suppression
Cosmology and Nongalactic Astrophysics
2014-06-18 v2 High Energy Physics - Theory
Abstract
Recent measurements from the BICEP2 cosmic microwave background polarization experiment indicate the presence of primordial gravitational waves with surprisingly large amplitude. If these results are confirmed, they point to a discrepancy with temperature anisotropy power spectrum measurements and suggest that extensions to the standard cosmological model may be required to resolve the discrepancy. One intriguing extension is an anticorrelation between tensors and scalars to naturally suppress the temperature power. Here I examine this possibility and show that such a suppression is not possible in the presence of a general form of anticorrelation.
Keywords
Cite
@article{arxiv.1404.4866,
title = {Scalar-tensor correlations and large-scale power suppression},
author = {J. P. Zibin},
journal= {arXiv preprint arXiv:1404.4866},
year = {2014}
}
Comments
5 pages, references added, minor typos corrected; version published in Phys. Rev. D