Dissipative cosmological solutions

The exact general solution to the Einstein equations in a homogeneous Universe with a full causal viscous fluid source for the bulk viscosity index m = 1/2 is found. We have investigated the asymptotic stability of Friedmann and de Sitter solutions, the former is stable for m ≥ 1/2 and the latter fo...

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Autores principales: Chimento, Luis Pascual, Jakubi, Alejandro Silvio
Publicado: 1997
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v14_n7_p1811_Chimento
http://hdl.handle.net/20.500.12110/paper_02649381_v14_n7_p1811_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02649381_v14_n7_p1811_Chimento
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spelling paper:paper_02649381_v14_n7_p1811_Chimento2023-06-08T15:23:20Z Dissipative cosmological solutions Chimento, Luis Pascual Jakubi, Alejandro Silvio The exact general solution to the Einstein equations in a homogeneous Universe with a full causal viscous fluid source for the bulk viscosity index m = 1/2 is found. We have investigated the asymptotic stability of Friedmann and de Sitter solutions, the former is stable for m ≥ 1/2 and the latter for m ≤ 1/2. The comparison with results of the truncated theory is made. For m = 1/2, it was found that families of solutions with extrema no longer remain in the full case and they are replaced by asymptotically Minkowski evolutions. These solutions are monotonic. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Jakubi, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v14_n7_p1811_Chimento http://hdl.handle.net/20.500.12110/paper_02649381_v14_n7_p1811_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 The exact general solution to the Einstein equations in a homogeneous Universe with a full causal viscous fluid source for the bulk viscosity index m = 1/2 is found. We have investigated the asymptotic stability of Friedmann and de Sitter solutions, the former is stable for m ≥ 1/2 and the latter for m ≤ 1/2. The comparison with results of the truncated theory is made. For m = 1/2, it was found that families of solutions with extrema no longer remain in the full case and they are replaced by asymptotically Minkowski evolutions. These solutions are monotonic.
author Chimento, Luis Pascual
Jakubi, Alejandro Silvio
spellingShingle Chimento, Luis Pascual
Jakubi, Alejandro Silvio
Dissipative cosmological solutions
author_facet Chimento, Luis Pascual
Jakubi, Alejandro Silvio
author_sort Chimento, Luis Pascual
title Dissipative cosmological solutions
title_short Dissipative cosmological solutions
title_full Dissipative cosmological solutions
title_fullStr Dissipative cosmological solutions
title_full_unstemmed Dissipative cosmological solutions
title_sort dissipative cosmological solutions
publishDate 1997
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v14_n7_p1811_Chimento
http://hdl.handle.net/20.500.12110/paper_02649381_v14_n7_p1811_Chimento
work_keys_str_mv AT chimentoluispascual dissipativecosmologicalsolutions
AT jakubialejandrosilvio dissipativecosmologicalsolutions
_version_ 1768541607834943488

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