Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/38282
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Brito, Irene | por |
dc.contributor.author | Silva, M. F. A. da | por |
dc.contributor.author | Mena, Filipe C. | por |
dc.contributor.author | Santos, N. O. | por |
dc.date.accessioned | 2015-11-18T17:29:16Z | - |
dc.date.issued | 2015-09 | - |
dc.date.submitted | 2014-09 | - |
dc.identifier.issn | 0264-9381 | por |
dc.identifier.uri | https://hdl.handle.net/1822/38282 | - |
dc.description.abstract | We analyse the geodesics' dynamics in cylindrically symmetric vacuum spacetimes with $\Lambda>0$ and compare it to the $\Lambda= 0$ and $\Lambda<0$ cases. When $\Lambda>0$ there are two singularities in the metric which brings new qualitative features to the dynamics. We find that $\Lambda=0$ planar timelike confined geodesics are unstable against the introduction of a sufficiently large $\Lambda$, in the sense that the bounded orbits become unbounded. In turn, any non-planar radially bounded geodesics are stable for any positive $\Lambda$. We construct global non-singular static vacuum spacetimes in cylindrical symmetry with $\Lambda>0$ by matching the Linet-Tian metric with two appropriate sources. | por |
dc.description.sponsorship | IB and FM thank CMAT, Univ. Minho, for support through the FEDER Funds COMPETE and FCT Projects PEst-C/MAT/UI0013/2011 and Est-OE/MAT/UI0013/2014. FM is also supported by FCT project CERN/FP/123609/2011. FM and NOS thank the warm hospitality from Instituto de Fisica, UERJ, Rio de Janeiro, where this work was completed. MFAdaSilva acknowledges the financial support from FAPERJ (no. E-26/171.754/2000, E-26/171.533.2002, E-26/170.951/2006, E-26/110.432/2009 and E-26/111.714/2010), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq-Brazil (no. 450572/2009-9, 301973/2009-1 and 477268/2010-2) and Financiadora de Estudos e Projetos-FINEP-Brazil. | por |
dc.language.iso | eng | por |
dc.publisher | IOP Publishing | por |
dc.relation | PEst-C/MAT/UI0013/2011 | - |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/135888/PT | - |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/123609/PT | - |
dc.rights | restrictedAccess | por |
dc.subject | Exact solutions | por |
dc.subject | Geodesics | por |
dc.subject | Dynamics and stability | por |
dc.subject | Cylindrical symmetry | por |
dc.title | Geodesics dynamics in the Linet–Tian spacetime with Λ > 0 | eng |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://iopscience.iop.org/article/10.1088/0264-9381/32/18/185015 | por |
sdum.publicationstatus | published | por |
oaire.citationIssue | 18 | por |
oaire.citationTitle | Classical and Quantum Gravity | por |
oaire.citationVolume | 32 | por |
dc.identifier.eissn | 1361-6382 | - |
dc.identifier.doi | 10.1088/0264-9381/32/18/185015 | por |
dc.subject.fos | Ciências Naturais::Matemáticas | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Classical and Quantum Gravity | por |
Aparece nas coleções: | CMAT - Artigos em revistas com arbitragem / Papers in peer review journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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LTgeoLambda+.pdf Acesso restrito! | 622,51 kB | Adobe PDF | Ver/Abrir |