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Abstract:

We investigate a spatially flat Friedmann-Robertson-Walker universe that has an interacting dark matter, a modified holographic Ricci dark energy (MHRDE), plus a third, decoupled component that behaves as a radiation term. We consider a nonlinear interaction in the dark component densities and their derivatives up to second order. We apply the χ2 method to the observational Hubble data for constraining the cosmological parameters, and analyze the amount of dark energy in the radiation era for both MHRDE and holographic Ricci dark energy models. The former is consistent with the bound Ω x(z1100)<0.1 reported for the behavior of dark energy at early times, while the latter does not fulfill it. © 2012 American Physical Society.

Registro:

Documento: Artículo
Título:Interacting dark matter and modified holographic Ricci dark energy plus a noninteracting cosmic component
Autor:Chimento, L.P.; Richarte, M.G.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón I, Ciudad Universitaria 1428, Buenos Aires, Argentina
Año:2012
Volumen:85
Número:12
DOI: http://dx.doi.org/10.1103/PhysRevD.85.127301
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v85_n12_p_Chimento

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Citas:

---------- APA ----------
Chimento, L.P. & Richarte, M.G. (2012) . Interacting dark matter and modified holographic Ricci dark energy plus a noninteracting cosmic component. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(12).
http://dx.doi.org/10.1103/PhysRevD.85.127301
---------- CHICAGO ----------
Chimento, L.P., Richarte, M.G. "Interacting dark matter and modified holographic Ricci dark energy plus a noninteracting cosmic component" . Physical Review D - Particles, Fields, Gravitation and Cosmology 85, no. 12 (2012).
http://dx.doi.org/10.1103/PhysRevD.85.127301
---------- MLA ----------
Chimento, L.P., Richarte, M.G. "Interacting dark matter and modified holographic Ricci dark energy plus a noninteracting cosmic component" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 85, no. 12, 2012.
http://dx.doi.org/10.1103/PhysRevD.85.127301
---------- VANCOUVER ----------
Chimento, L.P., Richarte, M.G. Interacting dark matter and modified holographic Ricci dark energy plus a noninteracting cosmic component. Phys Rev D Part Fields Gravit Cosmol. 2012;85(12).
http://dx.doi.org/10.1103/PhysRevD.85.127301