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Asymptotic Symmetries in Cosmological Models

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.

Año de publicación:

2008

Keywords:

    Fuente:

    googlegoogle

    Tipo de documento:

    Other

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Gravedad
    • Modelo matemático

    Áreas temáticas:

    • Cuerpos y fenómenos celestes específicos

    Contribuidores:

    Antonio Di TeodoroAntonio Di Teodoro