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-...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento |
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todo:paper_02182718_v5_n3_p313_Chimento2023-10-03T15:11:01Z Scalar field cosmologies with viscous fluid Chimento, L.P. Jakubi, A.S. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
description |
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. |
format |
JOUR |
author |
Chimento, L.P. Jakubi, A.S. |
spellingShingle |
Chimento, L.P. Jakubi, A.S. Scalar field cosmologies with viscous fluid |
author_facet |
Chimento, L.P. Jakubi, A.S. |
author_sort |
Chimento, L.P. |
title |
Scalar field cosmologies with viscous fluid |
title_short |
Scalar field cosmologies with viscous fluid |
title_full |
Scalar field cosmologies with viscous fluid |
title_fullStr |
Scalar field cosmologies with viscous fluid |
title_full_unstemmed |
Scalar field cosmologies with viscous fluid |
title_sort |
scalar field cosmologies with viscous fluid |
url |
http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento |
work_keys_str_mv |
AT chimentolp scalarfieldcosmologieswithviscousfluid AT jakubias scalarfieldcosmologieswithviscousfluid |
_version_ |
1782031126128230400 |