Dark radiation and dark matter coupled to holographic Ricci dark energy

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We investigate a universe filled with interacting dark matter, holographic dark energy, and dark radiation for the spatially flat Friedmann-Robertson-Walker (FRW) spacetime. We use a linear interaction to reconstruct all the component energy densities in terms of the scale factor by directly solving...

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Autores principales:	Chimento, L.P., Richarte, M.G.
Formato:	Artículo publishedVersion
Publicado:	2013
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14346044_v73_n4_p1_Chimento https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v73_n4_p1_Chimento_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

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spelling	I28-R145-paper_14346044_v73_n4_p1_Chimento_oai2024-08-16 Chimento, L.P. Richarte, M.G. 2013 We investigate a universe filled with interacting dark matter, holographic dark energy, and dark radiation for the spatially flat Friedmann-Robertson-Walker (FRW) spacetime. We use a linear interaction to reconstruct all the component energy densities in terms of the scale factor by directly solving the balance's equations along with the source equation. We apply the χ 2 method to the observational Hubble data for constraining the cosmic parameters, contrast with the Union 2 sample of supernovae, and analyze the amount of dark energy in the radiation era. It turns out that our model exhibits an excess of dark energy in the recombination era whereas the stringent bound Ωx(z≃1010) < 0.21 at big-bang nucleosynthesis is fulfilled. We find that the interaction provides a physical mechanism for alleviating the triple cosmic coincidence and this leads to Ωm0/Ωx0≃Ωr0/Ωx0≃O(1). © 2013 Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Richarte, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_14346044_v73_n4_p1_Chimento info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Eur. Phys. J. C 2013;73(4):1-9 Dark radiation and dark matter coupled to holographic Ricci dark energy info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v73_n4_p1_Chimento_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
description	We investigate a universe filled with interacting dark matter, holographic dark energy, and dark radiation for the spatially flat Friedmann-Robertson-Walker (FRW) spacetime. We use a linear interaction to reconstruct all the component energy densities in terms of the scale factor by directly solving the balance's equations along with the source equation. We apply the χ 2 method to the observational Hubble data for constraining the cosmic parameters, contrast with the Union 2 sample of supernovae, and analyze the amount of dark energy in the radiation era. It turns out that our model exhibits an excess of dark energy in the recombination era whereas the stringent bound Ωx(z≃1010) < 0.21 at big-bang nucleosynthesis is fulfilled. We find that the interaction provides a physical mechanism for alleviating the triple cosmic coincidence and this leads to Ωm0/Ωx0≃Ωr0/Ωx0≃O(1). © 2013 Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica.
format	Artículo Artículo publishedVersion
author	Chimento, L.P. Richarte, M.G.
spellingShingle	Chimento, L.P. Richarte, M.G. Dark radiation and dark matter coupled to holographic Ricci dark energy
author_facet	Chimento, L.P. Richarte, M.G.
author_sort	Chimento, L.P.
title	Dark radiation and dark matter coupled to holographic Ricci dark energy
title_short	Dark radiation and dark matter coupled to holographic Ricci dark energy
title_full	Dark radiation and dark matter coupled to holographic Ricci dark energy
title_fullStr	Dark radiation and dark matter coupled to holographic Ricci dark energy
title_full_unstemmed	Dark radiation and dark matter coupled to holographic Ricci dark energy
title_sort	dark radiation and dark matter coupled to holographic ricci dark energy
publishDate	2013
url	http://hdl.handle.net/20.500.12110/paper_14346044_v73_n4_p1_Chimento https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v73_n4_p1_Chimento_oai
work_keys_str_mv	AT chimentolp darkradiationanddarkmattercoupledtoholographicriccidarkenergy AT richartemg darkradiationanddarkmattercoupledtoholographicriccidarkenergy
_version_	1809356925147545600

Dark radiation and dark matter coupled to holographic Ricci dark energy

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