Silent universes with a cosmological constant

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We study non-degenerate (Petrov type I) silent universes in the presence of a non-vanishing cosmological constant L. In contrast to the L=0 case, for which the orthogonally spatially homogeneous Bianchi type I metrics most likely are the only admissible metrics, solutions are shown to exist when L is positive. The general solution is presented for the case where one of the eigenvalues of the expansion tensor is 0.
11 pages; several typos corrected which were still present in CGQ version; minor changes

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/201063

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0402125
 http://arxiv.org/abs/gr-qc/0402125
 Class.Quant.Grav.21:2291-2299,2004
 doi:10.1088/0264-9381/21/9/006

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arXiv