Accelerating universe without event horizon
| dc.creator | Gonzalez-Diaz, Pedro F. | |
| dc.date | 2002-10-08 | |
| dc.date.accessioned | 2026-07-07T02:05:37Z | |
| dc.date.available | 2026-07-07T02:05:37Z | |
| dc.description | It is shown that if a small negative cosmological constant is added to quintessence models with equation of state $p=ωρ$ on the range $-1 <ω< -1/3$, the resulting scenarios could not contain any future event horizons. Therefore, such cosmological accelerating scenarios could not present the kind of obstacles recently pointed out to define a set of observable quantities analogous to an S-matrix needed by predictive M and string theories in an accelerating universe driven by dark energy. These scenarios become accelerating only at early times after coincidence time, and lead finally to re-collapse. | |
| dc.description | 4 pages, contribution to the XVIIIth IAP Meeting "On the Nature of Dark Energy" | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0210177 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0210177 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/5156 | |
| dc.subject | Astrophysics | |
| dc.title | Accelerating universe without event horizon | |
| dc.type | text |