Internal symmetry in Bianchi type-I cosmologies

Using the one-parameter internal symmetry group in the Bianchi type-I spacetime for cosmological models with a perfect fluid, we show that a system of coordinates exists in the associated internal space where two scale factors become equal. We find the general solution for an anisotropic model conta...

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Autor principal: Chimento, L.P.
Formato: JOUR
Materias:
anisotropy
article
cosmos
dynamics
energy
gravity
pressure
space
velocity
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562821_v68_n2_p_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05562821_v68_n2_p_Chimento
record_format dspace
spelling todo:paper_05562821_v68_n2_p_Chimento2023-10-03T15:35:49Z Internal symmetry in Bianchi type-I cosmologies Chimento, L.P. anisotropy article cosmos dynamics energy gravity pressure space velocity Using the one-parameter internal symmetry group in the Bianchi type-I spacetime for cosmological models with a perfect fluid, we show that a system of coordinates exists in the associated internal space where two scale factors become equal. We find the general solution for an anisotropic model containing a perfect fluid with constant baryotropic index and investigate the asymptotic regimes. We obtain exact solutions for a set of anisotropic fluids which includes an anisotropic stiff fluid. © 2003 The American Physical Society. Fil:Chimento, L.P. 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_05562821_v68_n2_p_Chimento
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic anisotropy
article
cosmos
dynamics
energy
gravity
pressure
space
velocity
spellingShingle anisotropy
article
cosmos
dynamics
energy
gravity
pressure
space
velocity
Chimento, L.P.
Internal symmetry in Bianchi type-I cosmologies
topic_facet anisotropy
article
cosmos
dynamics
energy
gravity
pressure
space
velocity
description Using the one-parameter internal symmetry group in the Bianchi type-I spacetime for cosmological models with a perfect fluid, we show that a system of coordinates exists in the associated internal space where two scale factors become equal. We find the general solution for an anisotropic model containing a perfect fluid with constant baryotropic index and investigate the asymptotic regimes. We obtain exact solutions for a set of anisotropic fluids which includes an anisotropic stiff fluid. © 2003 The American Physical Society.
format JOUR
author Chimento, L.P.
author_facet Chimento, L.P.
author_sort Chimento, L.P.
title Internal symmetry in Bianchi type-I cosmologies
title_short Internal symmetry in Bianchi type-I cosmologies
title_full Internal symmetry in Bianchi type-I cosmologies
title_fullStr Internal symmetry in Bianchi type-I cosmologies
title_full_unstemmed Internal symmetry in Bianchi type-I cosmologies
title_sort internal symmetry in bianchi type-i cosmologies
url http://hdl.handle.net/20.500.12110/paper_05562821_v68_n2_p_Chimento
work_keys_str_mv AT chimentolp internalsymmetryinbianchitypeicosmologies
_version_ 1807324661348827136

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