Abstract
In this paper, we use the type Ia supernovae data to constrain the holographic dark energy model proposed by Li. We also apply a cosmic age test to this analysis. We consider in this paper a spatially flat Friedmann-Robertson-Walker universe with a matter component and a holographic dark energy component. The fit result shows that the case () is favored, which implies that the holographic dark energy behaves as a quintom-type dark energy. Furthermore, we also perform a joint analysis of to this model; the result is well improved and still upholds the quintom dark energy conclusion. The best fit results in our analysis are , , and , which lead to the present equation of state of dark energy and the deceleration/acceleration transition redshift . Finally, an expected supernova/acceleration probe simulation using as a fiducial model is performed on this model, and the result shows that the holographic dark energy model takes on () even though the dark energy is indeed a cosmological constant.
2 More- Received 6 June 2005
DOI:https://doi.org/10.1103/PhysRevD.72.043524
©2005 American Physical Society