Exact scalar field cosmologies in (1+1) dimensions

We report a series of exact cosmological solutions of the gravitational (1+1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson - Walker universe and obtain the scale factor and the field for several physically interesting potentials....

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Autores principales: Chimento, L.P., Cossarini, A.E.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02649381_v11_n5_p1177_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02649381_v11_n5_p1177_Chimento
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spelling todo:paper_02649381_v11_n5_p1177_Chimento2023-10-03T15:13:06Z Exact scalar field cosmologies in (1+1) dimensions Chimento, L.P. Cossarini, A.E. We report a series of exact cosmological solutions of the gravitational (1+1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson - Walker universe and obtain the scale factor and the field for several physically interesting potentials. In the case of a non-vanishing positive cosmological constant , we have found asymptotically de Sitter solutions which resemble the (3+1)-dimensional results. When we have to take restrictive conditions on the sign of the potential function in order to obtain exactly solvable models which include exponential inflationary processes. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cossarini, A.E. 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_v11_n5_p1177_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 We report a series of exact cosmological solutions of the gravitational (1+1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson - Walker universe and obtain the scale factor and the field for several physically interesting potentials. In the case of a non-vanishing positive cosmological constant , we have found asymptotically de Sitter solutions which resemble the (3+1)-dimensional results. When we have to take restrictive conditions on the sign of the potential function in order to obtain exactly solvable models which include exponential inflationary processes.
format JOUR
author Chimento, L.P.
Cossarini, A.E.
spellingShingle Chimento, L.P.
Cossarini, A.E.
Exact scalar field cosmologies in (1+1) dimensions
author_facet Chimento, L.P.
Cossarini, A.E.
author_sort Chimento, L.P.
title Exact scalar field cosmologies in (1+1) dimensions
title_short Exact scalar field cosmologies in (1+1) dimensions
title_full Exact scalar field cosmologies in (1+1) dimensions
title_fullStr Exact scalar field cosmologies in (1+1) dimensions
title_full_unstemmed Exact scalar field cosmologies in (1+1) dimensions
title_sort exact scalar field cosmologies in (1+1) dimensions
url http://hdl.handle.net/20.500.12110/paper_02649381_v11_n5_p1177_Chimento
work_keys_str_mv AT chimentolp exactscalarfieldcosmologiesin11dimensions
AT cossariniae exactscalarfieldcosmologiesin11dimensions
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