Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase

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dc.creatorCapozziello, S.
dc.creatorNojiri, S.
dc.creatorOdintsov, S. D.
dc.creatorTroisi, A.
dc.date2006-04-20
dc.date2006-06-24
dc.date.accessioned2026-07-07T10:23:02Z
dc.date.available2026-07-07T10:23:02Z
dc.descriptionWe show that f(R)-gravity can, in general, give rise to cosmological viable models compatible with a matter-dominated epoch evolving into a late accelerated phase. We discuss the various representations of f(R)-gravity as an ideal fluid or a scalar-tensor gravity theory, taking into account conformal transformations. We point out that mathematical equivalence does not correspond, in several cases, to the physical equivalence of Jordan frame and Einstein frame. Finally, we show that wide classes of f(R)-gravity models, including matter and accelerated phases, can be phenomenologically reconstructed by means of observational data. In principle, any popular quintessence models could be "reframed" as an f(R)-gravity model.
dc.description11 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/astro-ph/0604431
dc.identifierhttp://arxiv.org/abs/astro-ph/0604431
dc.identifierPhys.Lett.B639:135-143,2006
dc.identifierdoi:10.1016/j.physletb.2006.06.034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175681
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
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