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dc.contributor.authorLiberato, Lamartine
dc.contributor.authorRosenfeld, Rogério [UNESP]
dc.identifier.citationJournal of Cosmology and Astroparticle Physics. Bristol: Iop Publishing Ltd, n. 7, 15 p., 2006.
dc.description.abstractThere are a plethora of dark energy parametrizations that can fit current supernovae Ia data. However, these data are only sensitive to redshifts up to order one. In fact, many of these parametrizations break down at higher redshifts. In this paper we study the effect of dark energy models on the formation of dark halos. We select a couple of dark energy parametrizations which are sensible at high redshifts and compute their effect on the evolution of density perturbations in the linear and non-linear regimes. Using the Press-Schechter formalism we show that they produce distinguishable signatures in the number counts of dark halos. Therefore, future observations of galaxy clusters can provide complementary constraints on the behaviour of dark energy.en
dc.publisherIop Publishing Ltd
dc.relation.ispartofJournal of Cosmology and Astroparticle Physics
dc.sourceWeb of Science
dc.subjectdark energy theorypt
dc.subjectcosmological perturbation theorypt
dc.subjectclassical tests of cosmologypt
dc.subjectsemi-analytic modellingpt
dc.titleDark energy parametrizations and their effect on dark halosen
dcterms.rightsHolderIop Publishing Ltd
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationState Univ São Paulo, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUnespState Univ São Paulo, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt
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