Show simple item record

dc.contributor.authorMorais, Joao
dc.contributor.authorBouhmadi López, Mariam ORCID
dc.contributor.authorMarto, Joao
dc.date.accessioned2018-12-14T19:09:49Z
dc.date.available2018-12-14T19:09:49Z
dc.date.issued2018-03-03
dc.identifier.citationUniverse 3(1) : (2017) // Article ID 21es_ES
dc.identifier.issn2218-1997
dc.identifier.urihttp://hdl.handle.net/10810/30387
dc.description.abstractThe latest cosmological observations by the Planck collaboration (and combined with others) are compatible with a phantom-like behaviour (w <-1) for the dark energy equation of state that drives the current acceleration of the Universe. With this mindset, we look into models where dark energy is described by a 3-form field minimally coupled to gravity. When compared to a scalar field, these models have the advantage of more naturally accommodating a cosmological-constant and phantom-like behaviours. We show how the latter happens for a fairly general class of positive-valued potentials, and through a dynamical system approach, we find that in such cases the 3-form field leads the Universe into a Little Sibling of the Big Rip singular event into the future. In this work, we explore the possibility of avoiding such singularity via an interaction in the dark sector between cold dark matter and the 3-form field. For the kind of interactions considered, we deduce a condition for replacing the LSBR by a late time de Sitter phase. For specific examples of interactions that meet this condition, we look for distinctive imprints in the statefinder hierarchy , through the composite null diagnostic (CND).es_ES
dc.description.sponsorshipThe Authors are grateful to Juan M. Aguirregabiria and Cesar Silva for enlightening discussions on dynamical system analysis. The Authors also acknowledge Nelson Nunes for helping us to understand several issues related to 3-forms. The work of MBL is supported by the Portuguese Agency "Fundacao para a Ciencia e Tecnologia" through an Investigador FCT Research contract, with reference IF/01442/2013/CP1196/CT0001. She and JMorais wish to acknowledge the partial support from the Basque government Grant No. IT592-13 (Spain) and FONDOS FEDER under grant FIS2014-57956-P (Spanish government). J. Morais is also thankful to UPV/EHU for a PhD fellowship and UBI for hospitality during the completion of part of this work. The authors acknowledge the COST Action CA15117 (CANTATA).es_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectdark energy 3-formses_ES
dc.subjectDM-DE interactiones_ES
dc.subjectfuture singularitieses_ES
dc.subjectcosmographyes_ES
dc.subjectstatefinders approaches_ES
dc.subjectgrowth ratees_ES
dc.subjectdynamical systemses_ES
dc.title3-Form Cosmology: Phantom Behaviour, Singularities and Interactionses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).es_ES
dc.rights.holderAtribución 3.0 España*
dc.relation.publisherversionhttps://www.mdpi.com/2218-1997/3/1/21es_ES
dc.identifier.doi10.3390/universe3010021
dc.departamentoesFísica teórica e historia de la cienciaes_ES
dc.departamentoeuFisika teorikoa eta zientziaren historiaes_ES


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).