Cosmological model with interactions in the dark sector

A cosmological model for the present Universe is analyzed whose constituents are a non-interacting baryonic matter field and interacting dark matter and dark energy fields. The dark energy and dark matter are coupled through their effective barotropic indexes, which are considered as functions of th...

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Detalles Bibliográficos
Autores principales: Chimento, Luis Pascual, Forte, Mónica Isabel
Publicado: 2009
Materias:
Dark energy
Dark matter
Interacting fluids
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v41_n5_p1125_Chimento
http://hdl.handle.net/20.500.12110/paper_00017701_v41_n5_p1125_Chimento
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00017701_v41_n5_p1125_Chimento
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spelling paper:paper_00017701_v41_n5_p1125_Chimento2023-06-08T14:21:36Z Cosmological model with interactions in the dark sector Chimento, Luis Pascual Forte, Mónica Isabel Dark energy Dark matter Interacting fluids A cosmological model for the present Universe is analyzed whose constituents are a non-interacting baryonic matter field and interacting dark matter and dark energy fields. The dark energy and dark matter are coupled through their effective barotropic indexes, which are considered as functions of the ratio of their energy densities. Two asymptotically stable cases are investigated for the ratio of the dark energy densities which have their parameters adjusted by considering best fits to Hubble function data. It is shown that the deceleration parameter, the density parameters, and the luminosity distance have the correct behavior which is expected for a viable present scenario of the Universe. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Forte, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v41_n5_p1125_Chimento http://hdl.handle.net/20.500.12110/paper_00017701_v41_n5_p1125_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 Dark energy
Dark matter
Interacting fluids
spellingShingle Dark energy
Dark matter
Interacting fluids
Chimento, Luis Pascual
Forte, Mónica Isabel
Cosmological model with interactions in the dark sector
topic_facet Dark energy
Dark matter
Interacting fluids
description A cosmological model for the present Universe is analyzed whose constituents are a non-interacting baryonic matter field and interacting dark matter and dark energy fields. The dark energy and dark matter are coupled through their effective barotropic indexes, which are considered as functions of the ratio of their energy densities. Two asymptotically stable cases are investigated for the ratio of the dark energy densities which have their parameters adjusted by considering best fits to Hubble function data. It is shown that the deceleration parameter, the density parameters, and the luminosity distance have the correct behavior which is expected for a viable present scenario of the Universe.
author Chimento, Luis Pascual
Forte, Mónica Isabel
author_facet Chimento, Luis Pascual
Forte, Mónica Isabel
author_sort Chimento, Luis Pascual
title Cosmological model with interactions in the dark sector
title_short Cosmological model with interactions in the dark sector
title_full Cosmological model with interactions in the dark sector
title_fullStr Cosmological model with interactions in the dark sector
title_full_unstemmed Cosmological model with interactions in the dark sector
title_sort cosmological model with interactions in the dark sector
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v41_n5_p1125_Chimento
http://hdl.handle.net/20.500.12110/paper_00017701_v41_n5_p1125_Chimento
work_keys_str_mv AT chimentoluispascual cosmologicalmodelwithinteractionsinthedarksector
AT fortemonicaisabel cosmologicalmodelwithinteractionsinthedarksector
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