Cosmological models in semi-classical and higher order gravitational theories
We have studied semiclassical models with a classical scalar field, giving exact solutions in the cases of a λ φ4 and an exponential self-interaction potential, in the last case we have also studied the influence of the vacuum polarization terms on the stability of the power-law solutions. We have a...
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v274_n4_p837_Chimento http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
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paper:paper_0004640X_v274_n4_p837_Chimento2023-06-08T14:29:30Z Cosmological models in semi-classical and higher order gravitational theories We have studied semiclassical models with a classical scalar field, giving exact solutions in the cases of a λ φ4 and an exponential self-interaction potential, in the last case we have also studied the influence of the vacuum polarization terms on the stability of the power-law solutions. We have also found cosmological exact solutions to the higher order gravitational equations derived from a Lagrangian with a R □k R structure, and investigated the stability of the de Sitter and Minkowski space-time in the sixth order approximation of this theory. ‡ Supported by scholarship of the Universidad de Buenos Aires. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v274_n4_p837_Chimento http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
| institution |
Universidad de Buenos Aires |
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I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We have studied semiclassical models with a classical scalar field, giving exact solutions in the cases of a λ φ4 and an exponential self-interaction potential, in the last case we have also studied the influence of the vacuum polarization terms on the stability of the power-law solutions. We have also found cosmological exact solutions to the higher order gravitational equations derived from a Lagrangian with a R □k R structure, and investigated the stability of the de Sitter and Minkowski space-time in the sixth order approximation of this theory. ‡ Supported by scholarship of the Universidad de Buenos Aires. |
| title |
Cosmological models in semi-classical and higher order gravitational theories |
| spellingShingle |
Cosmological models in semi-classical and higher order gravitational theories |
| title_short |
Cosmological models in semi-classical and higher order gravitational theories |
| title_full |
Cosmological models in semi-classical and higher order gravitational theories |
| title_fullStr |
Cosmological models in semi-classical and higher order gravitational theories |
| title_full_unstemmed |
Cosmological models in semi-classical and higher order gravitational theories |
| title_sort |
cosmological models in semi-classical and higher order gravitational theories |
| publishDate |
2000 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v274_n4_p837_Chimento http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
| _version_ |
1768544391355432960 |