Conserved quantities in the perturbed Friedmann world model

Details Conserved quantities in the perturbed Friedmann world model Conserved quantities in the perturbed Friedmann world model

1999-09-09

arxiv.org/abs/astro-ph/9909150v1

J.KoreanPhys.Soc.35:S633-S637,1999; J.KoreanPhys.Soc.35:S633-637,1999

Astronomy and Astrophysics

Astrophysics

4 pages, no figure, Proceedings of The 2nd Seoul Workshop on Gravitation and Cosmology

Scientific paper

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.

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