Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction

We examine a spatially flat Friedmann-Robertson-Walker (FRW) universe filled with interacting dark matter and a modified holographic Ricci dark energy (MHRDE). The interaction term is selected as a significant rational function of the total energy density and its first derivative homogeneous of degr...

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Detalles Bibliográficos
Autores principales:	Chimento, Luis Pascual, Richarte, Martín Gustavo
Publicado:	2012
Materias:	dark energy dark matter early dark energy interaction relaxed Chaplygin gas Ricci cutoff
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1471_n_p45_Chimento http://hdl.handle.net/20.500.12110/paper_0094243X_v1471_n_p45_Chimento
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0094243X_v1471_n_p45_Chimento
record_format	dspace
spelling	paper:paper_0094243X_v1471_n_p45_Chimento2023-06-08T15:09:13Z Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction Chimento, Luis Pascual Richarte, Martín Gustavo dark energy dark matter early dark energy interaction relaxed Chaplygin gas Ricci cutoff We examine a spatially flat Friedmann-Robertson-Walker (FRW) universe filled with interacting dark matter and a modified holographic Ricci dark energy (MHRDE). The interaction term is selected as a significant rational function of the total energy density and its first derivative homogeneous of degree. We show that the effective one-fluid obeys the equation of state of a relaxed Chaplygin gas, then the universe turns to be dominated by pressureless dark matter at early times and undergoes an accelerated expansion in the far future driven by a strong negative pressure. Performing a X2-statistical analysis with the observational Hubble data and the Union2 compilation of SNe Ia, we place some constraints on cosmological parameters analyzing the feasibleness of the modified holographic Ricci ansatz. It turned that MHRDE gets the accelerated expansion faster than the ΛCDM model. Finally, a new model with a component that does not exchange energy with the interacting dark sector is presented for studying bounds on the dark energy at early times. © 2012 American Institute of Physics. 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. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1471_n_p45_Chimento http://hdl.handle.net/20.500.12110/paper_0094243X_v1471_n_p45_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 early dark energy interaction relaxed Chaplygin gas Ricci cutoff
spellingShingle	dark energy dark matter early dark energy interaction relaxed Chaplygin gas Ricci cutoff Chimento, Luis Pascual Richarte, Martín Gustavo Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
topic_facet	dark energy dark matter early dark energy interaction relaxed Chaplygin gas Ricci cutoff
description	We examine a spatially flat Friedmann-Robertson-Walker (FRW) universe filled with interacting dark matter and a modified holographic Ricci dark energy (MHRDE). The interaction term is selected as a significant rational function of the total energy density and its first derivative homogeneous of degree. We show that the effective one-fluid obeys the equation of state of a relaxed Chaplygin gas, then the universe turns to be dominated by pressureless dark matter at early times and undergoes an accelerated expansion in the far future driven by a strong negative pressure. Performing a X2-statistical analysis with the observational Hubble data and the Union2 compilation of SNe Ia, we place some constraints on cosmological parameters analyzing the feasibleness of the modified holographic Ricci ansatz. It turned that MHRDE gets the accelerated expansion faster than the ΛCDM model. Finally, a new model with a component that does not exchange energy with the interacting dark sector is presented for studying bounds on the dark energy at early times. © 2012 American Institute of Physics.
author	Chimento, Luis Pascual Richarte, Martín Gustavo
author_facet	Chimento, Luis Pascual Richarte, Martín Gustavo
author_sort	Chimento, Luis Pascual
title	Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
title_short	Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
title_full	Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
title_fullStr	Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
title_full_unstemmed	Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
title_sort	dark matter and ricci-like holographic dark energy coupled through a quadratic interaction
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1471_n_p45_Chimento http://hdl.handle.net/20.500.12110/paper_0094243X_v1471_n_p45_Chimento
work_keys_str_mv	AT chimentoluispascual darkmatterandriccilikeholographicdarkenergycoupledthroughaquadraticinteraction AT richartemartingustavo darkmatterandriccilikeholographicdarkenergycoupledthroughaquadraticinteraction
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Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction

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