Perturbations in a non-singular bouncing Universe
High Energy Physics - Theory
2010-04-05 v1 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We complement the low-energy gravi-dilaton effective action of string theory with a non-local, general-covariant dilaton potential, and obtain homogeneous solutions describing a non-singular (bouncing-curvature) cosmology. We then compute, both analytically and numerically, the spectrum of amplified scalar and tensor perturbations, and draw some general lessons on how to extract observable consequences from pre-big bang and ekpyrotic scenarios.
Cite
@article{arxiv.hep-th/0306113,
title = {Perturbations in a non-singular bouncing Universe},
author = {M. Gasperini and M. Giovannini and G. Veneziano},
journal= {arXiv preprint arXiv:hep-th/0306113},
year = {2010}
}
Comments
14 pages in Latex style, 5 included figures