The cosmological gravitational wave background from primordial density perturbations
广义相对论与量子宇宙学
2008-11-26 v1 天体物理学
高能物理 - 唯象学
摘要
We discuss the gravitational wave background generated by primordial density perturbations evolving during the radiation era. At second-order in a perturbative expansion, density fluctuations produce gravitational waves. We calculate the power spectra of gravitational waves from this mechanism, and show that, in principle, future gravitational wave detectors could be used to constrain the primordial power spectrum on scales vastly different from those currently being probed by large-scale structure. As examples we compute the gravitational wave background generated by both a power-law spectrum on all scales, and a delta-function power spectrum on a single scale.
引用
@article{arxiv.gr-qc/0612013,
title = {The cosmological gravitational wave background from primordial density perturbations},
author = {Kishore N. Ananda and Chris Clarkson and David Wands},
journal= {arXiv preprint arXiv:gr-qc/0612013},
year = {2008}
}
备注
8 Pages