Bianchi I with variable $G$ and $Λ$. Self-Similar approach
| dc.creator | Belinchón, José Antonio | |
| dc.date | 2008-09-14 | |
| dc.date.accessioned | 2026-07-07T12:39:44Z | |
| dc.date.available | 2026-07-07T12:39:44Z | |
| dc.description | In this paper we study how to attack under the self-similarity hypothesis a perfect fluid Bianchi I model with variable $G,$and $Λ,$ but under the condition $\operatorname{div}T\neq0.$ We arrive to the conclusion that: $G$ and $Λ$ are decreasing time functions (the sing of $Λ$ depends on the equation of state), while the exponents of the scale factor must satisfy the conditions $\sum_{i=1}^{3}α_{i}=1$ and $\sum_{i=1}^{3}α_{i}^{2}<1,$ $\forallω\in(-1,1) ,$ relaxing in this way the Kasner conditions. We also show the connection between the behavior of $G$ and the Weyl tensor. | |
| dc.description | 15 pages. accepted in IJMPA | |
| dc.identifier | https://arxiv.org/abs/0809.2412 | |
| dc.identifier | http://arxiv.org/abs/0809.2412 | |
| dc.identifier | Int.J.Mod.Phys.A23:5021-5036,2008 | |
| dc.identifier | doi:10.1142/S0217751X08043127 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/219219 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Bianchi I with variable $G$ and $Λ$. Self-Similar approach | |
| dc.type | text |