Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
Exact solutions of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avo...
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| Autores principales: | , |
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| Publicado: |
1994
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v215_n2_p229_Chimento http://hdl.handle.net/20.500.12110/paper_0004640X_v215_n2_p229_Chimento |
| Aporte de: |
| Sumario: | Exact solutions of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avoid the singularity and a one-parameter family which does not have particles horizons. The de Sitter solution is found to be stable, while the Einstein universe is unstable. © 1994 Kluwer Academic Publishers. |
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