de Sitter spacetime: effects of metric perturbations on geodesic motion (Articolo in rivista)

Type
Label
  • de Sitter spacetime: effects of metric perturbations on geodesic motion (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bini D., Esposito G., Geralico A. (2012)
    de Sitter spacetime: effects of metric perturbations on geodesic motion
    in General relativity and gravitation
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bini D., Esposito G., Geralico A. (literal)
Pagina inizio
  • 467 (literal)
Pagina fine
  • 490 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Donato Bini Istituto per le Applicazioni del Calcolo ``M. Picone,'' CNR, I-00161 Rome, Italy ICRA, University of Rome ``La Sapienza,'' I--00185 Rome, Italy INFN - Sezione di Firenze, Polo Scientifico, Via Sansone 1, I--50019, Sesto Fiorentino (FI), Italy Giampiero Esposito INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cinthia, Edificio 6, 80126, Napoli, Italy Andrea Geralico Physics Department and ICRA, University of Rome ``La Sapienza,'' I--00185 Rome, Italy (literal)
Titolo
  • de Sitter spacetime: effects of metric perturbations on geodesic motion (literal)
Abstract
  • Gravitational perturbations of the de Sitter spacetime are investigated using the Regge--Wheeler formalism. The set of perturbation equations is reduced to a single second order differential equation of the Heun-type for both electric and magnetic multipoles. The solution so obtained is used to study the deviation from an initially radial geodesic due to the perturbation. The spectral properties of the perturbed metric are also analyzed. Finally, gauge- and tetrad-invariant first-order massless perturbations of any spin are explored following the approach of Teukolsky. The existence of closed-form, i.e. Liouvillian, solutions to the radial part of the Teukolsky master equation is discussed. (literal)
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