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New constraints on coupled dark energy from the Planck satellite experiment

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New constraints on coupled dark energy from the Planck satellite experiment

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dc.contributor.author	Salvatelli, Valentina
dc.contributor.author	Marchini, A.
dc.contributor.author	López Honórez, Laura
dc.contributor.author	Mena Requejo, Olga
dc.date.accessioned	2013-11-29T11:47:06Z
dc.date.available	2013-11-29T11:47:06Z
dc.date.issued	2013
dc.identifier.citation	Salvatelli, V. Marchini, A. Lopez-Honorez, L. Mena Requejo, Olga 2013 New constraints on coupled dark energy from the Planck satellite experiment Physical Review D 88 2 023531
dc.identifier.uri	http://hdl.handle.net/10550/31494
dc.description.abstract	We present new constraints on coupled dark energy from the recent measurements of the cosmic microwave background anisotropies from the Planck satellite mission. We found that a coupled dark energy model is fully compatible with the Planck measurements, deriving a weak bound on the dark matter-dark energy coupling parameter xi = -0.49(-0.31)(+0.19) at 68% C.L. Moreover if Planck data are fitted to a coupled dark energy scenario, the constraint on the Hubble constant is relaxed to H-0 = 72.1(-2.3)(+3.2) km/s/Mpc, solving the tension with the Hubble Space Telescope (HST) value. We show that a combined PLANCK + HST analysis provides significant evidence for coupled dark energy finding a nonzero value for the coupling parameter xi, with -0.90 < xi < -0.22 at 95% C.L. We also consider the combined constraints from the Planck data plus the baryon acoustic oscillation measurements of the 6dF Galaxy Survey, the Sloan Digital Sky Survey and the Baron Oscillation Spectroscopic Survey.
dc.relation.ispartof	Physical Review D, 2013, vol. 88, num. 2, p. 023531
dc.subject	Cosmologia
dc.subject	Astronomia
dc.title	New constraints on coupled dark energy from the Planck satellite experiment
dc.type	journal article	es_ES
dc.date.updated	2013-11-29T11:47:06Z
dc.identifier.doi	10.1103/PhysRevD.88.023531
dc.identifier.idgrec	092071
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1103/PhysRevD.88.023531