Spectrum of cosmic gravitational wave background
arXiv:hep-th/9604159
Abstract
Models of string cosmology predict a stochastic background of gravitational waves with a spectrum that is strongly tilted towards high frequencies. I give simple approximate expressions for spectral densities of the cosmic background which can be directly compared with sensitivities of gravitational wave detectors.
Extrapolation formula and one typo corrected. Latex, 6 pages, 2 eps figures