Asymptotic Symmetries in Cosmological Models

Details Asymptotic Symmetries in Cosmological Models Asymptotic Symmetries in Cosmological Models

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ijtp...47.1885d&link_type=abstract

International Journal of Theoretical Physics, Volume 47, Issue 7, pp.1885-1890

Physics

Asymptotic Symmetries, Cosmology

Scientific paper

In the present article we study asymptotic isometries and asymptotic conformal Killing motions of some anisotropic Bianchi cosmological models. We show that asymptotically isotropic homogeneous cosmological spaces can be covariantly studied and characterized using scalars constructed with the help the Killing equations. We exhibit some illustrative examples of space-times possessing asymptotic Killing collineations. We apply our results in order to discuss asymptotic symmetries associated with scalar cosmological perturbations.

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