A Natural Cosmological Model with Omega_matter <1
| dc.creator | Chapline, George | |
| dc.date | 1999-02-12 | |
| dc.date.accessioned | 2026-07-07T02:30:25Z | |
| dc.date.available | 2026-07-07T02:30:25Z | |
| dc.description | Flat cosmological models with a cosmological constant on the order of the Einstein-de Sitter critical density are enigmatic in the sense that there does not appear to be any natural explanation for why there should be a cosmological constant with such a magnitude. As a perhaps more natural alternative we propose a spatially homogeneous isotropic Omega=1 universe containing cold matter and with a vacuum energy that varies inversely with the square of the Robertson-Walker scale parameter. This leads to a cosmological model that in some ways resembles yet is distinct from an open Friedmann universe with no cosmological constant. Some possibilities for distinguishing between a flat universe with a cosmological constant and a flat universe where the vacuum energy is inversely proportional to the square of the scale parameter are discussed. | |
| dc.description | PostScript, 6 pages | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9902183 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9902183 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13812 | |
| dc.subject | Astrophysics | |
| dc.title | A Natural Cosmological Model with Omega_matter <1 | |
| dc.type | text |