Silent universes with a cosmological constant
arXiv:gr-qc/0402125 · doi:10.1088/0264-9381/21/9/006
Abstract
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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