Some remarks on the attractor behaviour in ELKO cosmology

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.creatorPereira, S. H. [UNESP]
dc.creatorPinho, A. S. S. [UNESP]
dc.creatorHoff da Silva, J. M. [UNESP]
dc.date2015-03-18T15:54:36Z
dc.date2015-03-18T15:54:36Z
dc.date2014-08-01
dc.date.accessioned2023-09-12T03:02:49Z
dc.date.available2023-09-12T03:02:49Z
dc.identifierhttp://dx.doi.org/10.1088/1475-7516/2014/08/020
dc.identifierJournal Of Cosmology And Astroparticle Physics. Bristol: Iop Publishing Ltd, n. 8, 15 p., 2014.
dc.identifier1475-7516
dc.identifierhttp://hdl.handle.net/11449/116979
dc.identifier10.1088/1475-7516/2014/08/020
dc.identifierWOS:000341848800020
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8766464
dc.descriptionRecent results on the dynamical stability of a system involving the interaction of the ELKO spinor field with standard matter in the universe have been reanalysed, and the conclusion is that such system does not exhibit isolated stable points that could alleviate the cosmic coincidence problem. When a constant parameter delta related to the potential of the ELKO field is introduced in the system however, stable fixed points are found for some specific types of interaction between the ELKO field and matter. Although the parameter delta is related to an unknown potential, in order to satisfy the stability conditions and also that the fixed points are real, the range of the constant parameter delta can be constrained for the present time and the coincidence problem can be alleviated for some specific interactions. Such restriction on the ELKO potential opens possibility to apply the ELKO field as a candidate to dark energy in the universe, and so explain the present phase of acceleration of the universe through the decay of the ELKO field into matter.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionUniv Estadual Paulista, Fac Engn Guaratingueta, Dept Quim & Fis, UNESP, BR-12516410 Guaratingueta, SP, Brazil
dc.descriptionUniv Estadual Paulista, Fac Engn Guaratingueta, Dept Quim & Fis, UNESP, BR-12516410 Guaratingueta, SP, Brazil
dc.descriptionCNPq: 477872/2010-7
dc.descriptionCNPq: 482043/2011-3
dc.descriptionCNPq: 308623/2012-6
dc.format15
dc.languageeng
dc.publisherIop Publishing Ltd
dc.relationJournal Of Cosmology And Astroparticle Physics
dc.relation5.126
dc.relation1,089
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectdark matter theory
dc.subjectcosmology of theories beyond the SM
dc.subjectdark energy theory
dc.titleSome remarks on the attractor behaviour in ELKO cosmology
dc.typeArtigo


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