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arXiv · gr-qc/9803069

G_2 cosmological models separable in non-comoving coordinates

José M. M. Senovilla·Raül Vera
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Abstract

We study new separable orthogonally transitive abelian G_2 on S_2 models with two mutually orthogonal integrable Killing vector fields. For this purpose we consider separability of the metric functions in a coordinate system in which the velocity vector field of the perfect fluid does not take its canonical form, providing thereby solutions which are non-separable in comoving coordinates in general. Some interesting general features concerning this class of solutions are given. We provide a full classification for these models and present several families of explicit solutions with their properties.

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José M. M. Senovilla, Raül Vera. 1998-03-19. G_2 cosmological models separable in non-comoving coordinates. https://doi.org/10.1088/0264-9381%2F15%2F6%2F022

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