Scalar field cosmologies with viscous fluid
We investigate cosmological models with a free scalar field and a viscous fluid. We find exact solutions for a linear and nonlinear viscosity pressure. Both yield singular and bouncing solutions. In the first regime, a de Sitter stage is asymptotically stable, while in the second case we find power-...
Guardado en:
| Publicado: |
1996
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v5_n3_p313_Chimento http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento |
| Aporte de: |
| Sumario: | We investigate cosmological models with a free scalar field and a viscous fluid. We find exact solutions for a linear and nonlinear viscosity pressure. Both yield singular and bouncing solutions. In the first regime, a de Sitter stage is asymptotically stable, while in the second case we find power-law evolutions for a vanishing cosmological constant. |
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