Study of a Class of Four Dimensional Nonsingular Cosmological Bounces
arXiv:hep-th/0307068 · doi:10.1088/1475-7516/2003/10/011
Abstract
We study a novel class of nonsingular time-symmetric cosmological bounces. In this class of four dimensional models the bounce is induced by a perfect fluid with a negative energy density. Metric perturbations are solved in an analytic way all through the bounce. The conditions for generating a scale invariant spectrum of tensor and scalar metric perturbations are discussed.
16 pages, 10 figures