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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Chimento, L.P., Forte, M., Kremer, G.M.
Formato: JOUR
Materias:
Dark energy
Dark matter
Interacting fluids
Acceso en línea: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 todo:paper_00017701_v41_n5_p1125_Chimento
record_format dspace
spelling todo:paper_00017701_v41_n5_p1125_Chimento2023-10-03T13:52:07Z Cosmological model with interactions in the dark sector Chimento, L.P. Forte, M. Kremer, G.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, L.P.
Forte, M.
Kremer, G.M.
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.
format JOUR
author Chimento, L.P.
Forte, M.
Kremer, G.M.
author_facet Chimento, L.P.
Forte, M.
Kremer, G.M.
author_sort Chimento, L.P.
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
url http://hdl.handle.net/20.500.12110/paper_00017701_v41_n5_p1125_Chimento
work_keys_str_mv AT chimentolp cosmologicalmodelwithinteractionsinthedarksector
AT fortem cosmologicalmodelwithinteractionsinthedarksector
AT kremergm cosmologicalmodelwithinteractionsinthedarksector
_version_ 1782027118953103360

Ejemplares similares