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Asymptotic Symmetries in Cosmological Models

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Abstract

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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Authors and Affiliations

  1. Departamento de Matemática, Universidad Simón Bolívar, Caracas, 1080A, Venezuela

    Antonio di Teodoro

  2. Centro de Física, IVIC, Apdo 21827, Caracas, 1020A, Venezuela

    Víctor M. Villalba

Authors
  1. Antonio di Teodoro
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  2. Víctor M. Villalba
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Correspondence to Víctor M. Villalba.

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di Teodoro, A., Villalba, V.M. Asymptotic Symmetries in Cosmological Models. Int J Theor Phys 47, 1885–1890 (2008). https://doi.org/10.1007/s10773-007-9633-6

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  • DOI: https://doi.org/10.1007/s10773-007-9633-6

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