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, L.P., Jakubi, A.S.
Formato: JOUR
Acceso en línea: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
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spelling todo:paper_02649381_v14_n7_p1811_Chimento2023-10-03T15:13:08Z Dissipative cosmological solutions Chimento, L.P. Jakubi, A.S. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Chimento, L.P.
Jakubi, A.S.
spellingShingle Chimento, L.P.
Jakubi, A.S.
Dissipative cosmological solutions
author_facet Chimento, L.P.
Jakubi, A.S.
author_sort Chimento, L.P.
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
url http://hdl.handle.net/20.500.12110/paper_02649381_v14_n7_p1811_Chimento
work_keys_str_mv AT chimentolp dissipativecosmologicalsolutions
AT jakubias dissipativecosmologicalsolutions
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