Holographic dark energy linearly interacting with dark matter
| Autor: | Chimento, Luis P., Forte, Mónica I., Richarte, Martín G. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | AIP Conf. Proc. 1471, 39 (2012) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.4756809 |
| Popis: | We investigate a spatially flat Friedmann-Robertson-Walker (FRW) cosmological model with cold dark matter coupled to a modified holographic Ricci dark energy through a general interaction term linear in the energy densities of dark matter and dark energy, the total energy density and its derivative. Using the statistical method of $\chi^2$-function for the Hubble data, we obtain $H_0=73.6$km/sMpc, $\omega_s=-0.842$ for the asymptotic equation of state and $ z_{acc}= 0.89 $. The estimated values of $\Omega_{c0}$ which fulfill the current observational bounds corresponds to a dark energy density varying in the range $0.25R < \ro_x < 0.27R$. Comment: March 2012. 6 pp., 6 figures. Note: To appear in the proceedings of the CosmoSul conference, held in Rio de Janeiro, Brazil, 01-05 august of 2011 |
| Databáze: | arXiv |
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