Regular homogeneous T-models with vacuum dark fluid
| dc.creator | Bronnikov, K. A. | |
| dc.creator | Dymnikova, I. G. | |
| dc.date | 2007-05-16 | |
| dc.date.accessioned | 2026-07-07T10:55:37Z | |
| dc.date.available | 2026-07-07T10:55:37Z | |
| dc.description | We present the class of regular homogeneous T-models with vacuum dark fluid, associated with a variable cosmological term. The vacuum fluid is defined by the symmetry of its stress-energy tensor, i.e., its invariance under Lorentz boosts in a distinguished spatial direction (p_j=-ρ), which makes this fluid essentially anisotropic and allows its density to evolve. Typical features of homogeneous regular T-models are: the existence of a Killing horizon; beginning of the cosmological evolution from a null bang at the horizon; the existence of a regular static pre-bang region visible to cosmological observers; creation of matter from anisotropic vacuum, accompanied by very rapid isotropization. We study in detail the spherically symmetric regular T-models on the basis of a general exact solution for a mixture of the vacuum fluid and dustlike matter and apply it to give numerical estimates for a particular model which illustrates the ability of cosmological T-models to satisfy the observational constraints. | |
| dc.description | 13 pages, no figures, Latex | |
| dc.identifier | https://arxiv.org/abs/0705.2368 | |
| dc.identifier | http://arxiv.org/abs/0705.2368 | |
| dc.identifier | Class.Quant.Grav.24:5803-5816,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/23/005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186133 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Regular homogeneous T-models with vacuum dark fluid | |
| dc.type | text |