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EnglishWe consider a rather simple method for the description of the big bang-big crunch cosmological singularity crossing. For the flat Friedmann universe this method gives the same results as more complicated methods, usingWeyl symmetry or the transitions between the Jordan and Einstein frames. It is then easily generalized for the case of a Bianchi-I anisotropic universe. We also present early-time and latetime asymptotic solutions for a Bianchi-I universe, filled with a conformally coupled massless scalar field.
| Titolo: | Bianchi-I cosmological model and crossing singularities |
| Autore/i: | KAMENCHTCHIK, ALEXANDR; Pozdeeva, E.; TRONCONI, ALESSANDRO; VENTURI, GIOVANNI; Vernov, S. |
| Autore/i Unibo: | |
| Anno: | 2017 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.95.083503 |
| Abstract: | We consider a rather simple method for the description of the big bang-big crunch cosmological singularity crossing. For the flat Friedmann universe this method gives the same results as more complicated methods, usingWeyl symmetry or the transitions between the Jordan and Einstein frames. It is then easily generalized for the case of a Bianchi-I anisotropic universe. We also present early-time and latetime asymptotic solutions for a Bianchi-I universe, filled with a conformally coupled massless scalar field. |
| Data stato definitivo: | 2017-10-26T18:15:56Z |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/11585/609595
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