Observational constraints on a holographic, interacting dark energy model

Details Observational constraints on a holographic, interacting dark energy model Observational constraints on a holographic, interacting dark energy model

2010-07-02

arxiv.org/abs/1007.0390v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

19 pages, 9 eps figures, to be publisehd in JCAP

Scientific paper

We constrain an interacting, holographic dark energy model, first proposed by two of us in [1], with observational data from supernovae, CMB shift, baryon acoustic oscillations, x-rays, and the Hubble rate. The growth function for this model is also studied. The model fits the data reasonably well but still the conventional $\Lambda$CDM model fares better. Nevertheless, the holographic model greatly alleviates the coincidence problem and shows compatibility at $1\sigma$ confidence level with the age of the old quasar APM 08279+5255.

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