Dissipative cosmological solutions
The exact general solution to the Einstein equations in a homogeneous Universe with a full causal viscous fluid source for the bulk viscosity index m = 1/2 is found. We have investigated the asymptotic stability of Friedmann and de Sitter solutions, the former is stable for m ≥ 1/2 and the latter fo...
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| Autores principales: | , |
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| Publicado: |
1997
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v14_n7_p1811_Chimento http://hdl.handle.net/20.500.12110/paper_02649381_v14_n7_p1811_Chimento |
| Aporte de: |
| Sumario: | The exact general solution to the Einstein equations in a homogeneous Universe with a full causal viscous fluid source for the bulk viscosity index m = 1/2 is found. We have investigated the asymptotic stability of Friedmann and de Sitter solutions, the former is stable for m ≥ 1/2 and the latter for m ≤ 1/2. The comparison with results of the truncated theory is made. For m = 1/2, it was found that families of solutions with extrema no longer remain in the full case and they are replaced by asymptotically Minkowski evolutions. These solutions are monotonic. |
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