Cosmologies with dynamical and coupled Dark Energy vs. CMB data

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dc.creatorBonometto, Silvio A.
dc.creatorCasarini, Luciano
dc.creatorColombo, Loris P. L.
dc.creatorMainini, Roberto
dc.date2006-12-22
dc.date.accessioned2026-07-07T07:36:42Z
dc.date.available2026-07-07T07:36:42Z
dc.descriptionWe compare a large set of cosmologies with WMAP data, performing a fit based on a MCMC algorithm. Besides of LCDM models, we take dynamical DE models, where DE and DM are uncoupled or coupled, both in the case of constant coupling and in the case when coupling varies with suitable laws. DE however arises from a scalar field self-interacting through a SUGRA potential. We find that the best fitting model is SUGRA dynamical DE, almost indipendently from the exponent alpha in the self-interaction potential. The main target of this work are however coupled DE models, for which we find limits on the DE-DM coupling strength. In the case of variable coupling, we also find that greater values of the Hubble constant are preferred.
dc.description21 pages, 10 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0612672
dc.identifierhttp://arxiv.org/abs/astro-ph/0612672
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/120516
dc.subjectAstrophysics
dc.titleCosmologies with dynamical and coupled Dark Energy vs. CMB data
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