A new single-dynamical-scalar-field model of dark energy
| dc.creator | Huang, Chao-Guang | |
| dc.creator | Guo, Han-Ying | |
| dc.date | 2005-08-06 | |
| dc.date.accessioned | 2026-07-07T02:18:24Z | |
| dc.date.available | 2026-07-07T02:18:24Z | |
| dc.description | A new single-dynamical-scalar-field model of dark energy is proposed, in which either higher derivative terms nor structures of extra dimension are needed. With the help of a fixed background vector field, the parameter for the effective equation of state of dark energy may cross $w=-1$ in the evolution of the universe. After suitable choice of the potential, the crossing $w=-1$ and transition from decelerating to accelerating occur at $z\approx 0.2$ and $z\approx 1.7$, respectively. | |
| dc.description | 7 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0508171 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0508171 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9478 | |
| dc.subject | Astrophysics | |
| dc.title | A new single-dynamical-scalar-field model of dark energy | |
| dc.type | text |