Petrov type I silent universes with G3 isometry group: the uniqueness result recovered

Details Petrov type I silent universes with G3 isometry group: the uniqueness result recovered Petrov type I silent universes with G3 isometry group: the uniqueness result recovered

2005-08-22

arxiv.org/abs/gr-qc/0508092v2

Class.Quant.Grav.23:329-334,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, no figures

Scientific paper

10.1088/0264-9381/23/2/004

The \emph{silent universe conjecture} (Sopuerta 1997, van Elst et al. 1997) states that the only algebraically general silent universes are the orthogonally spatially homogeneous Bianchi I models. In the same paper by Sopuerta this was confirmed for the subcase where the spacetime also admits a group G3 of isometries. However the proof contains a conceptual mistake. We recover the result in a different way.

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