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Observational constraints on a holographic, interacting dark energy model

Ivan Duran
(
- Barcelona, Autonoma U.
)
,
Diego Pavon
(
- Barcelona, Autonoma U.
)
,
Winfried Zimdahl
(
- Espirito Santo U.
)

Jul, 2010

19 pages

Published in:

JCAP 07 (2010) 018

e-Print:

1007.0390 [astro-ph.CO]

DOI:

10.1088/1475-7516/2010/07/018

View in:

ADS Abstract Service

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Abstract: (arXiv)

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.

Note:

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

dark energy: interaction
dark energy: holography
baryon: oscillation: acoustic
cosmic background radiation
cosmological model
Hubble constant
supernova
quasar
X-ray
dark energy: equation of state

References(47)

Figures(12)

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