Exact solutions in bouncing cosmology
| dc.creator | Stachowiak, Tomasz | |
| dc.creator | Szydlowski, Marek | |
| dc.date | 2006-10-25 | |
| dc.date | 2007-02-06 | |
| dc.date.accessioned | 2026-07-07T10:24:36Z | |
| dc.date.available | 2026-07-07T10:24:36Z | |
| dc.description | We discuss the effects of a (possibly) negative $(1+z)^6$ type contribution to the Friedmann equation. No definite answer can be given as to the presence and magnitude of a particular mechanism, because any test using the general relation $H(z)$ is able to estimate only the total of all sources of such a term. That is why we describe four possibilities: 1) geometric effects of loop quantum cosmology, 2) braneworld cosmology, 3) metric-affine gravity, and 4) cosmology with spinning fluid. We find the exact solutions for the models with $ρ^2$ correction in terms of elementary functions, and show all evolutional paths on their phase plane. Instead of the initial singularity, the generic feature is now a bounce. | |
| dc.description | 8 pages, 6 figures, 2 references added, some corrections in text, DOI | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0610121 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0610121 | |
| dc.identifier | Phys.Lett.B646:209-214,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.01.039 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176248 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Exact solutions in bouncing cosmology | |
| dc.type | text |