2013/01/15 by Ivan Duran, Duran, Ivan, Luca Parisi +1
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #astro-ph.CO #gr-qc
paper · pdf · doi:10.48550/arxiv.1301.3358
4 pages, 6 figures. Contribution to the Proceedings ERE2012
arxiv created 2013/01/15 · arxiv updated 2013/01/16
We consider holographic cosmological models of dark energy in which the infrared cutoff is set by the Hubble's radius. We show that any interacting dark energy model, regardless of its detailed form, can be recast as a non interacting model in which the holographic parameter c2 evolves slowly with time. Two specific cases are analyzed. We constrain the parameters of both models with observational data, and show that they can be told apart at the perturbative level.