Constraints on unified models for dark matter and dark energy using H(z)

Fabris JC, de Oliveira PLC, Velten H (2011)
European Physical Journal C 71(10).

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
The differential age data of astrophysical objects that have evolved passively during the history of the universe (e. g. red galaxies) allows us to test theoretical cosmological models through the predicted Hubble function expressed in terms of the redshift z, H(z). We use the observational data for H(z) to test unified scenarios for dark matter and dark energy. Specifically, we focus our analysis on the Generalized Chaplygin Gas (GCG) and the viscous fluid (VF) models. For the GCG model, it is shown that the unified scenario for dark energy and dark matter requires some priors. For the VF model we obtain estimations for the free parameters, which may be compared with further analysis mainly at perturbative level.
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Zeitschriftentitel
European Physical Journal C
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71
Zeitschriftennummer
10
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Fabris JC, de Oliveira PLC, Velten H. Constraints on unified models for dark matter and dark energy using H(z). European Physical Journal C. 2011;71(10).
Fabris, J. C., de Oliveira, P. L. C., & Velten, H. (2011). Constraints on unified models for dark matter and dark energy using H(z). European Physical Journal C, 71(10). doi:10.1140/epjc/s10052-011-1773-4
Fabris, J. C., de Oliveira, P. L. C., and Velten, H. (2011). Constraints on unified models for dark matter and dark energy using H(z). European Physical Journal C 71.
Fabris, J.C., de Oliveira, P.L.C., & Velten, H., 2011. Constraints on unified models for dark matter and dark energy using H(z). European Physical Journal C, 71(10).
J.C. Fabris, P.L.C. de Oliveira, and H. Velten, “Constraints on unified models for dark matter and dark energy using H(z)”, European Physical Journal C, vol. 71, 2011.
Fabris, J.C., de Oliveira, P.L.C., Velten, H.: Constraints on unified models for dark matter and dark energy using H(z). European Physical Journal C. 71, (2011).
Fabris, Julio C., de Oliveira, Paulo L. C., and Velten, Hermano. “Constraints on unified models for dark matter and dark energy using H(z)”. European Physical Journal C 71.10 (2011).

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