De Sitter Bounces
arXiv:hep-th/0406028 · doi:10.1088/0264-9381/21/21/014
Abstract
By analytically continuing recently-found instantons, we construct time-dependent solutions of Einstein-Maxwell de Sitter gravity which smoothly bounce between two de Sitter phases. These deformations of de Sitter space undergo several stages in their time evolution. Four and five-dimensional de Sitter bounces can be lifted to non-singular time-dependent solutions of M-theory.
Latex, 18 pages, 5 figures