Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields

Exact solutions to the Einstein Dirac Klein-Gordon equations are found in Bianchi type-I and type-V spacetimes. When the spinor field is massive, the Bianchi type-I universe has singularities of the Zel dovich type, and it may begin anisotropically at a singularity, leading to a dust-filled Friedman...

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Autores principales: Chimento, Luis Pascual, Pensa, Fabián Gabriel
Publicado: 1990
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v42_n4_p1098_Chimento
http://hdl.handle.net/20.500.12110/paper_05562821_v42_n4_p1098_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_05562821_v42_n4_p1098_Chimento
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spelling paper:paper_05562821_v42_n4_p1098_Chimento2025-07-30T18:18:37Z Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields Chimento, Luis Pascual Pensa, Fabián Gabriel Exact solutions to the Einstein Dirac Klein-Gordon equations are found in Bianchi type-I and type-V spacetimes. When the spinor field is massive, the Bianchi type-I universe has singularities of the Zel dovich type, and it may begin anisotropically at a singularity, leading to a dust-filled Friedmann stage at late times. For ghost neutrinos we get an axisymmetric Zel dovich universe. These solutions have particle horizons. For the Bianchi type-V model there exist solutions which begin at a singularity, tending to flat spacetime at late times. In this case the neutrinos are not ghost ones. © 1990 The American Physical Society. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pensa, F.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v42_n4_p1098_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v42_n4_p1098_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 Exact solutions to the Einstein Dirac Klein-Gordon equations are found in Bianchi type-I and type-V spacetimes. When the spinor field is massive, the Bianchi type-I universe has singularities of the Zel dovich type, and it may begin anisotropically at a singularity, leading to a dust-filled Friedmann stage at late times. For ghost neutrinos we get an axisymmetric Zel dovich universe. These solutions have particle horizons. For the Bianchi type-V model there exist solutions which begin at a singularity, tending to flat spacetime at late times. In this case the neutrinos are not ghost ones. © 1990 The American Physical Society.
author Chimento, Luis Pascual
Pensa, Fabián Gabriel
spellingShingle Chimento, Luis Pascual
Pensa, Fabián Gabriel
Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
author_facet Chimento, Luis Pascual
Pensa, Fabián Gabriel
author_sort Chimento, Luis Pascual
title Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
title_short Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
title_full Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
title_fullStr Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
title_full_unstemmed Exact Bianchi type-(I,V) solutions of the Einstein equations with scalar and spinor fields
title_sort exact bianchi type-(i,v) solutions of the einstein equations with scalar and spinor fields
publishDate 1990
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v42_n4_p1098_Chimento
http://hdl.handle.net/20.500.12110/paper_05562821_v42_n4_p1098_Chimento
work_keys_str_mv AT chimentoluispascual exactbianchitypeivsolutionsoftheeinsteinequationswithscalarandspinorfields
AT pensafabiangabriel exactbianchitypeivsolutionsoftheeinsteinequationswithscalarandspinorfields
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