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Abstract:

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.

Registro:

Documento: Artículo
Título:Cosmological model with interactions in the dark sector
Autor:Chimento, L.P.; Forte, M.; Kremer, G.M.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón I, 1428 Buenos Aires, Argentina
Departamento de Física, Universidade Federal Do Paraná, Caixa Postal 19044, Curitiba 81531-990, Brazil
Palabras clave:Dark energy; Dark matter; Interacting fluids
Año:2009
Volumen:41
Número:5
Página de inicio:1125
Página de fin:1137
DOI: http://dx.doi.org/10.1007/s10714-008-0694-5
Título revista:General Relativity and Gravitation
Título revista abreviado:Gen. Relativ. Gravit.
ISSN:00017701
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v41_n5_p1125_Chimento

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Citas:

---------- APA ----------
Chimento, L.P., Forte, M. & Kremer, G.M. (2009) . Cosmological model with interactions in the dark sector. General Relativity and Gravitation, 41(5), 1125-1137.
http://dx.doi.org/10.1007/s10714-008-0694-5
---------- CHICAGO ----------
Chimento, L.P., Forte, M., Kremer, G.M. "Cosmological model with interactions in the dark sector" . General Relativity and Gravitation 41, no. 5 (2009) : 1125-1137.
http://dx.doi.org/10.1007/s10714-008-0694-5
---------- MLA ----------
Chimento, L.P., Forte, M., Kremer, G.M. "Cosmological model with interactions in the dark sector" . General Relativity and Gravitation, vol. 41, no. 5, 2009, pp. 1125-1137.
http://dx.doi.org/10.1007/s10714-008-0694-5
---------- VANCOUVER ----------
Chimento, L.P., Forte, M., Kremer, G.M. Cosmological model with interactions in the dark sector. Gen. Relativ. Gravit. 2009;41(5):1125-1137.
http://dx.doi.org/10.1007/s10714-008-0694-5