Gravitational waves in non-singular string cosmologies
General Relativity and Quantum Cosmology
2009-11-07 v1 Astrophysics
High Energy Physics - Theory
Abstract
We study the evolution of tensor metric fluctuations in a class of non-singular models based on the string effective action, by including in the perturbation equation the higher-derivative and loop corrections needed to regularise the background solutions. We discuss the effects of such higher-order corrections on the final graviton spectrum, and we compare the results of analytical and numerical computations.
Cite
@article{arxiv.gr-qc/0101019,
title = {Gravitational waves in non-singular string cosmologies},
author = {C. Cartier and E. J. Copeland and M. Gasperini},
journal= {arXiv preprint arXiv:gr-qc/0101019},
year = {2009}
}
Comments
24 pages, 7 figures