Collapse of simple harmonic universe
High Energy Physics - Theory
2015-05-30 v4 General Relativity and Quantum Cosmology
Abstract
In a recent paper Graham et al constructed oscillating and static universe models which are stable with respect to all classical perturbations. Here we show that such universes are quantum-mechanically unstable and can collapse by quantum tunneling to zero radius. We also present instantons describing nucleation of oscillating and static universes from nothing.
Cite
@article{arxiv.1110.4096,
title = {Collapse of simple harmonic universe},
author = {Audrey T. Mithani and Alexander Vilenkin},
journal= {arXiv preprint arXiv:1110.4096},
year = {2015}
}
Comments
14 pages, 4 figures; v2: Discussion of tunneling from nothing is expanded into a separate section; some references added; v3: Note added; some additional references added; v4: some comments and references added