Cosmological phase space of R^n gravity
| dc.creator | Cervantes, Alejandro Aviles | |
| dc.creator | Cervantes-Cota, Jorge L. | |
| dc.date | 2009-01-23 | |
| dc.date.accessioned | 2026-07-07T12:58:04Z | |
| dc.date.available | 2026-07-07T12:58:04Z | |
| dc.description | We present some exact solutions and a phase space analysis of metric $f(R)$-gravity models of the type $R^{n}$. We divide our discussion in $n\neq2$ and $n=2$ models. The later model is a good approximation, at late times to the $f(R) = \frac{2}πR \tan^{-1}(R/β^2)$ gravity model, being this an example of a non--singular case. For $n \neq 2$ models we have found power law solutions for the scale factor that are attractors and that comply with WMAP 5-years data if $n <-2.55 $ or $ 1.67< n < 2$. On the other hand, the quadratic model has the de Sitter solution as an attractor, that also complies with WMAP 5-years data. | |
| dc.description | 8 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0901.3722 | |
| dc.identifier | http://arxiv.org/abs/0901.3722 | |
| dc.identifier | AIP Conf.Proc.1083:57-64,2008 | |
| dc.identifier | doi:10.1063/1.3058579 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225121 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Cosmological phase space of R^n gravity | |
| dc.type | text |