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...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
| Aporte de: |
| id |
todo:paper_0004640X_v274_n4_p837_Chimento |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_0004640X_v274_n4_p837_Chimento2023-10-03T14:02:55Z Cosmological models in semi-classical and higher order gravitational theories Chimento, L.P. Zuccalá, N.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
| institution |
Universidad de Buenos Aires |
| institution_str |
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. |
| format |
JOUR |
| author |
Chimento, L.P. Zuccalá, N.A. |
| spellingShingle |
Chimento, L.P. Zuccalá, N.A. Cosmological models in semi-classical and higher order gravitational theories |
| author_facet |
Chimento, L.P. Zuccalá, N.A. |
| author_sort |
Chimento, L.P. |
| title |
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 |
| url |
http://hdl.handle.net/20.500.12110/paper_0004640X_v274_n4_p837_Chimento |
| work_keys_str_mv |
AT chimentolp cosmologicalmodelsinsemiclassicalandhigherordergravitationaltheories AT zuccalana cosmologicalmodelsinsemiclassicalandhigherordergravitationaltheories |
| _version_ |
1807316892378988544 |