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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Publicado: 1996
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v5_n3_p313_Chimento
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 paper:paper_02182718_v5_n3_p313_Chimento
record_format dspace
spelling paper:paper_02182718_v5_n3_p313_Chimento2025-07-30T17:59:54Z 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-law evolutions for a vanishing cosmological constant. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v5_n3_p313_Chimento 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.
title Scalar field cosmologies with viscous fluid
spellingShingle 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
publishDate 1996
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v5_n3_p313_Chimento
http://hdl.handle.net/20.500.12110/paper_02182718_v5_n3_p313_Chimento
_version_ 1840323907619389440

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