de Sitter spacetime: effects of metric perturbations on geodesic motion

@article{Bini2012deSS,
  title={de Sitter spacetime: effects of metric perturbations on geodesic motion},
  author={D. Bini and G. Esposito and A. Geralico},
  journal={General Relativity and Gravitation},
  year={2012},
  volume={44},
  pages={467-490}
}
  • D. Bini, G. Esposito, A. Geralico
  • Published 2012
  • Physics, Mathematics
  • General Relativity and Gravitation
  • 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… CONTINUE READING
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