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CONSERVED EVOLUTIONS OF THE PERTURBED FRIEDMANN WORLD MODEL

    https://doi.org/10.1142/9789812799678_0033Cited by:0 (Source: Crossref)
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    Abstract:

    The evolutions of linear structures in a spatially homogeneous and isotropic world model are characterized by some conserved quantities. The amplitude of gravitational wave is conserved in the super-horizon scale, the perturbed three-space curvature in the comoving gauge is conserved in the super-sound-horizon scale, and the angular momentum of rotational perturbation is generally conserved.