Publication
Cosmic infinity: a dynamical system approach
| dc.contributor.author | Bouhmadi Lopez, Mariam | |
| dc.contributor.author | Marto, João | |
| dc.contributor.author | Morais, João | |
| dc.contributor.author | Silva, César M. | |
| dc.date.accessioned | 2018-03-06T11:57:31Z | |
| dc.date.available | 2018-03-21T01:30:08Z | |
| dc.date.issued | 2017-03-21 | |
| dc.description.abstract | Dynamical system techniques are extremely useful to study cosmology. It turns out that in most of the cases, we deal with finite isolated fixed points corresponding to a given cosmological epoch. However, it is equally important to analyse the asymptotic behaviour of the universe. On this paper, we show how this can be carried out for 3-forms model. In fact, we show that there are fixed points at infinity mainly by introducing appropriate compactifications and defining a new time variable that washes away any potential divergence of the system. The richness of 3-form models allows us as well to identify normally hyperbolic non-isolated fixed points. We apply this analysis to three physically interesting situations: (i) a pre-inflationary era; (ii) an inflationary era; (iii) the late-time dark matter/dark energy epoch. | pt_PT |
| dc.description.sponsorship | The work of MBL is supported by the Portuguese Agency Fundação para a Ciência e Tecnologia through an Investigador FCT Research contract, with refer- ence IF/01442/2013/ CP1196/CT0001. MBL and JMorais wish to acknowledge the sup- port from the Basque government Grant No. IT592-13 (Spain), FONDOS FEDER under grant FIS2014-57956-P (Spanish government) and the COST Action CA15117 (CANTATA). JMorais is also thankful to UPV/EHU for a PhD fellowship. This research work is supported by the grant UID/MAT/00212/2013. | |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Mariam Bouhmadi-López et al JCAP03(2017)042 | pt_PT |
| dc.identifier.doi | 10.1088/1475-7516/2017/03/042 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.6/4611 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.relation | Center of Mathematics and Applications of University of Beira Interior | |
| dc.relation | What is the hand that rocks the "cradle” of the accelerating universe? | |
| dc.relation.publisherversion | http://iopscience.iop.org/article/10.1088/1475-7516/2017/03/042/meta | pt_PT |
| dc.subject | Cosmology | pt_PT |
| dc.subject | Dynamical system | pt_PT |
| dc.title | Cosmic infinity: a dynamical system approach | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Center of Mathematics and Applications of University of Beira Interior | |
| oaire.awardTitle | What is the hand that rocks the "cradle” of the accelerating universe? | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAT%2F00212%2F2013/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01442%2F2013%2FCP1196%2FCT0001/PT | |
| oaire.citation.endPage | 042 | pt_PT |
| oaire.citation.issue | 03 | pt_PT |
| oaire.citation.startPage | 042 | pt_PT |
| oaire.citation.volume | 2017 | pt_PT |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | Investigador FCT | |
| person.familyName | Bouhmadi Lopez | |
| person.familyName | Pedro de Jesus Marto | |
| person.familyName | Morais | |
| person.familyName | Silva | |
| person.givenName | Mariam | |
| person.givenName | João | |
| person.givenName | João | |
| person.givenName | César | |
| person.identifier.ciencia-id | CF1F-8611-C989 | |
| person.identifier.ciencia-id | 2F16-67B1-A930 | |
| person.identifier.ciencia-id | A617-5B18-86CC | |
| person.identifier.orcid | 0000-0002-1529-1889 | |
| person.identifier.orcid | 0000-0003-3974-9177 | |
| person.identifier.orcid | 0000-0001-5090-8015 | |
| person.identifier.orcid | 0000-0001-6189-8836 | |
| person.identifier.scopus-author-id | 6508339470 | |
| person.identifier.scopus-author-id | 55756497200 | |
| person.identifier.scopus-author-id | 37089577800 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.embargofct | Journal of Cosmology and Astroparticle Physics - Post-print on institutional website, institutional repository, subject-based repository, bioRxiv, PubMed Central, non-commercial scientific social network or third party eprint servers after 12 months embargo | pt_PT |
| rcaap.rights | closedAccess | pt_PT |
| rcaap.type | article | pt_PT |
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