Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid

Exact solutions of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avo...

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Autores principales: Chimento, L.P., Zuccalá, N.A.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0004640X_v215_n2_p229_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_0004640X_v215_n2_p229_Chimento2023-10-03T14:02:48Z Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid Chimento, L.P. Zuccalá, N.A. Exact solutions of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avoid the singularity and a one-parameter family which does not have particles horizons. The de Sitter solution is found to be stable, while the Einstein universe is unstable. © 1994 Kluwer Academic Publishers. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zuccalá, N.A. 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_0004640X_v215_n2_p229_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 of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avoid the singularity and a one-parameter family which does not have particles horizons. The de Sitter solution is found to be stable, while the Einstein universe is unstable. © 1994 Kluwer Academic Publishers.
format JOUR
author Chimento, L.P.
Zuccalá, N.A.
spellingShingle Chimento, L.P.
Zuccalá, N.A.
Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
author_facet Chimento, L.P.
Zuccalá, N.A.
author_sort Chimento, L.P.
title Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
title_short Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
title_full Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
title_fullStr Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
title_full_unstemmed Self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
title_sort self-consistent solutions of the semi-classical back-reaction equations with cosmological constant spatial curvature and perfect fluid
url http://hdl.handle.net/20.500.12110/paper_0004640X_v215_n2_p229_Chimento
work_keys_str_mv AT chimentolp selfconsistentsolutionsofthesemiclassicalbackreactionequationswithcosmologicalconstantspatialcurvatureandperfectfluid
AT zuccalana selfconsistentsolutionsofthesemiclassicalbackreactionequationswithcosmologicalconstantspatialcurvatureandperfectfluid
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