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Inflation in a two 3-form fields scenario

2014-04-01Journal article Restricted access
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dc.contributor.authorKumar, K. Sravan
dc.contributor.authorMarto, João
dc.contributor.authorNunes, Nelson J.
dc.contributor.authorMoniz, Paulo
dc.date.accessioned2018-11-26T15:38:58Z
dc.date.available2018-11-26T15:38:58Z
dc.date.issued2014-04-01
dc.description.abstractA setting constituted by N 3-form fields, without any direct interaction between them, minimally coupled to gravity, is introduced in this paper as a framework to study the early evolution of the universe. We focus particularly on the two 3-forms case. An inflationary scenario is found, emerging from the coupling to gravity. More concretely, the fields coupled in this manner exhibit a complex interaction, mediated by the time derivative of the Hubble parameter. Our investigation is supported by means of a suitable choice of potentials, employing numerical methods and analytical approximations. In more detail, the oscillations on the small field limit become correlated, and one field is intertwined with the other. In this type of solution, a varying sound speed is present, together with the generation of isocurvature perturbations. The mentioned features allow to consider an interesting model, to test against observation. It is subsequently shown how our results are consistent with current CMB data (viz.Planck and BICEP2).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationK. Sravan Kumar et al JCAP06(2014)064pt_PT
dc.identifier.doi10.1088/1475-7516/2014/06/064pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/6498
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relation.publisherversionhttps://doi.org/10.1088/1475-7516/2014/06/064pt_PT
dc.subjectInflationpt_PT
dc.subject3-form fieldspt_PT
dc.titleInflation in a two 3-form fields scenariopt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDTI/CERN%2FFP%2F123615%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDTI/CERN%2FFP%2F123618%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FFIS%2FUI2751%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FMAT%2FUI0212%2F2014/PT
oaire.citation.endPage064pt_PT
oaire.citation.issue06pt_PT
oaire.citation.startPage064pt_PT
oaire.citation.titleJournal of Cosmology and Astroparticle Physicspt_PT
oaire.citation.volume2014pt_PT
oaire.fundingStream3599-PPCDTI
oaire.fundingStream3599-PPCDTI
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameKUMAR
person.familyNamePedro de Jesus Marto
person.familyNameMoniz
person.givenNameK. SRAVAN
person.givenNameJoão
person.givenNamePaulo
person.identifier277693
person.identifier.ciencia-id5014-F2B1-1CEC
person.identifier.ciencia-id2F16-67B1-A930
person.identifier.ciencia-idB410-D0B7-55C1
person.identifier.orcid0000-0002-3126-8195
person.identifier.orcid0000-0003-3974-9177
person.identifier.orcid0000-0001-7170-8952
person.identifier.ridM-9845-2013
person.identifier.scopus-author-id56896293800
person.identifier.scopus-author-id6701832578
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctCopyright cedido à editora no momento da publicaçãopt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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