Slowly rotating sphere in de Sitter space-time
Department of Physics, University of Kurdistan, Pasdaran St., Sanandaj, Iran
Accepted: 14 May 2013
Published online: 6 June 2013
The stationary solutions of the wave equation describing the gravitational perturbations in a curved background are considered. The background space-time is a de Sitter metric (including a cosmological term . It is assumed that the metric perturbations are generated by a slowly rotating sphere in stationary motion. Solutions to the wave equation are linear in and can be interpreted physically in comparison with the corresponding solutions in the flat background ( .
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2013