Scalar field cosmologies with viscous fluid

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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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Autores principales: Chimento, L.P., Jakubi, A.S.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02182718_v5_n3_p313_Chimento
record_format dspace
spelling 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
collection 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
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